Fix HybridLambda repr (#8565)
Fix HybridLambda repr (#8565)

* fix HybridLambda repr

* ensure function name printed by HybridBlock repr when string

tornadomeet/mxnet,ptrendx/mxnet,tlby/mxnet,CodingCat/mxnet,ykim362/mxnet,yuruofeifei/mxnet,vikingMei/mxnet,leezu/mxnet,dmlc/mxnet,tlby/mxnet,formath/mxnet,mbaijal/incubator-mxnet,eric-haibin-lin/mxnet,jamesliu/mxnet,jennyzhang0215/incubator-mxnet,yajiedesign/mxnet,ForkedReposBak/mxnet,sxjscience/mxnet,jiajiechen/mxnet,mbaijal/incubator-mxnet,madjam/mxnet,ykim362/mxnet,larroy/mxnet,zhreshold/mxnet,dmlc/mxnet,TuSimple/mxnet,sxjscience/mxnet,szha/mxnet,mbaijal/incubator-mxnet,ykim362/mxnet,dmlc/mxnet,weleen/mxnet,CodingCat/mxnet,DickJC123/mxnet,Northrend/mxnet,jamesliu/mxnet,tlby/mxnet,jamesliu/mxnet,ptrendx/mxnet,precedenceguo/mxnet,zhreshold/mxnet,dmlc/mxnet,jennyzhang0215/incubator-mxnet,eric-haibin-lin/mxnet,eric-haibin-lin/mxnet,rahul003/mxnet,tornadomeet/mxnet,dmlc/mxnet,reminisce/mxnet,piiswrong/mxnet,sxjscience/mxnet,precedenceguo/mxnet,ForkedReposBak/mxnet,LinkHS/incubator-mxnet,precedenceguo/mxnet,madjam/mxnet,leezu/mxnet,zhreshold/mxnet,mbaijal/incubator-mxnet,ykim362/mxnet,mbaijal/incubator-mxnet,rahul003/mxnet,eric-haibin-lin/mxnet,formath/mxnet,CodingCat/mxnet,DickJC123/mxnet,LinkHS/incubator-mxnet,Northrend/mxnet,DickJC123/mxnet,solin319/incubator-mxnet,ykim362/mxnet,TuSimple/mxnet,jiajiechen/mxnet,luoyetx/mxnet,yuruofeifei/mxnet,tornadomeet/mxnet,jiajiechen/mxnet,indhub/mxnet,mbaijal/incubator-mxnet,ykim362/mxnet,zhreshold/mxnet,apache/incubator-mxnet,zhreshold/mxnet,madjam/mxnet,reminisce/mxnet,fullfanta/mxnet,piiswrong/mxnet,hpi-xnor/BMXNet,Northrend/mxnet,ykim362/mxnet,precedenceguo/mxnet,solin319/incubator-mxnet,rahul003/mxnet,jennyzhang0215/incubator-mxnet,jamesliu/mxnet,LinkHS/incubator-mxnet,vikingMei/mxnet,indhub/mxnet,ptrendx/mxnet,navrasio/mxnet,ptrendx/mxnet,tlby/mxnet,leezu/mxnet,sxjscience/mxnet,luoyetx/mxnet,LinkHS/incubator-mxnet,LinkHS/incubator-mxnet,piiswrong/mxnet,Northrend/mxnet,weleen/mxnet,larroy/mxnet,jiajiechen/mxnet,indhub/mxnet,yuruofeifei/mxnet,dmlc/mxnet,larroy/mxnet,jiajiechen/mxnet,jiajiechen/mxnet,jamesliu/mxnet,LinkHS/incubator-mxnet,LinkHS/incubator-mxnet,Northrend/mxnet,tornadomeet/mxnet,luoyetx/mxnet,szha/mxnet,Northrend/mxnet,indhub/mxnet,solin319/incubator-mxnet,CodingCat/mxnet,reminisce/mxnet,navrasio/mxnet,leezu/mxnet,ForkedReposBak/mxnet,jiajiechen/mxnet,rahul003/mxnet,zhreshold/mxnet,jennyzhang0215/incubator-mxnet,leezu/mxnet,eric-haibin-lin/mxnet,sxjscience/mxnet,yajiedesign/mxnet,solin319/incubator-mxnet,jamesliu/mxnet,fullfanta/mxnet,yuruofeifei/mxnet,navrasio/mxnet,hpi-xnor/BMXNet,zhreshold/mxnet,weleen/mxnet,indhub/mxnet,luoyetx/mxnet,fullfanta/mxnet,precedenceguo/mxnet,weleen/mxnet,reminisce/mxnet,larroy/mxnet,fullfanta/mxnet,navrasio/mxnet,vikingMei/mxnet,TuSimple/mxnet,TuSimple/mxnet,luoyetx/mxnet,formath/mxnet,larroy/mxnet,ForkedReposBak/mxnet,formath/mxnet,TuSimple/mxnet,rahul003/mxnet,larroy/mxnet,yajiedesign/mxnet,apache/incubator-mxnet,mbaijal/incubator-mxnet,ForkedReposBak/mxnet,sxjscience/mxnet,yajiedesign/mxnet,szha/mxnet,leezu/mxnet,precedenceguo/mxnet,mbaijal/incubator-mxnet,madjam/mxnet,LinkHS/incubator-mxnet,piiswrong/mxnet,LinkHS/incubator-mxnet,yajiedesign/mxnet,luoyetx/mxnet,hpi-xnor/BMXNet,jiajiechen/mxnet,jennyzhang0215/incubator-mxnet,precedenceguo/mxnet,navrasio/mxnet,hpi-xnor/BMXNet,madjam/mxnet,szha/mxnet,leezu/mxnet,madjam/mxnet,reminisce/mxnet,hpi-xnor/BMXNet,hpi-xnor/BMXNet,szha/mxnet,jamesliu/mxnet,reminisce/mxnet,ptrendx/mxnet,tlby/mxnet,DickJC123/mxnet,weleen/mxnet,solin319/incubator-mxnet,hpi-xnor/BMXNet,precedenceguo/mxnet,piiswrong/mxnet,sxjscience/mxnet,eric-haibin-lin/mxnet,vikingMei/mxnet,Northrend/mxnet,luoyetx/mxnet,Northrend/mxnet,yuruofeifei/mxnet,CodingCat/mxnet,larroy/mxnet,yajiedesign/mxnet,ptrendx/mxnet,ptrendx/mxnet,ptrendx/mxnet,reminisce/mxnet,szha/mxnet,tornadomeet/mxnet,TuSimple/mxnet,indhub/mxnet,rahul003/mxnet,indhub/mxnet,jennyzhang0215/incubator-mxnet,tlby/mxnet,rahul003/mxnet,vikingMei/mxnet,jennyzhang0215/incubator-mxnet,CodingCat/mxnet,dmlc/mxnet,eric-haibin-lin/mxnet,precedenceguo/mxnet,solin319/incubator-mxnet,formath/mxnet,indhub/mxnet,luoyetx/mxnet,jennyzhang0215/incubator-mxnet,jennyzhang0215/incubator-mxnet,larroy/mxnet,jiajiechen/mxnet,zhreshold/mxnet,weleen/mxnet,jamesliu/mxnet,ForkedReposBak/mxnet,vikingMei/mxnet,fullfanta/mxnet,fullfanta/mxnet,TuSimple/mxnet,tornadomeet/mxnet,yuruofeifei/mxnet,dmlc/mxnet,szha/mxnet,apache/incubator-mxnet,leezu/mxnet,hpi-xnor/BMXNet,ykim362/mxnet,fullfanta/mxnet,sxjscience/mxnet,madjam/mxnet,navrasio/mxnet,indhub/mxnet,ForkedReposBak/mxnet,yuruofeifei/mxnet,yuruofeifei/mxnet,rahul003/mxnet,TuSimple/mxnet,solin319/incubator-mxnet,weleen/mxnet,tlby/mxnet,madjam/mxnet,TuSimple/mxnet,eric-haibin-lin/mxnet,formath/mxnet,apache/incubator-mxnet,tlby/mxnet,navrasio/mxnet,mbaijal/incubator-mxnet,CodingCat/mxnet,rahul003/mxnet,ykim362/mxnet,piiswrong/mxnet,yuruofeifei/mxnet,CodingCat/mxnet,reminisce/mxnet,piiswrong/mxnet,formath/mxnet,piiswrong/mxnet,dmlc/mxnet,weleen/mxnet,reminisce/mxnet,ForkedReposBak/mxnet,madjam/mxnet,reminisce/mxnet,solin319/incubator-mxnet,vikingMei/mxnet,Northrend/mxnet,CodingCat/mxnet,navrasio/mxnet,tlby/mxnet,TuSimple/mxnet,szha/mxnet,jamesliu/mxnet,yajiedesign/mxnet,weleen/mxnet,sxjscience/mxnet,navrasio/mxnet,fullfanta/mxnet,eric-haibin-lin/mxnet,ptrendx/mxnet,tlby/mxnet,piiswrong/mxnet,ptrendx/mxnet,luoyetx/mxnet,yajiedesign/mxnet,solin319/incubator-mxnet,larroy/mxnet,ForkedReposBak/mxnet,yajiedesign/mxnet,tornadomeet/mxnet,vikingMei/mxnet,tornadomeet/mxnet,fullfanta/mxnet,hpi-xnor/BMXNet,leezu/mxnet,tornadomeet/mxnet,zhreshold/mxnet,szha/mxnet,formath/mxnet,formath/mxnet,vikingMei/mxnet