T86875: Minor: xParsoidPromise -> xRestbasePromise
T86875: Minor: xParsoidPromise -> xRestbasePromise

wikimedia/hyperswitch,gwicke/restbase,Pchelolo/restbase,physikerwelt/restbase,gwicke/restbase,wikimedia/restbase,wikimedia/mediawiki-services-restbase,cscott/restbase,Krenair/restbase,milimetric/restbase,d00rman/restbase,eevans/restbase,Pchelolo/restbase,inverno/restbase,wikimedia/mediawiki-services-restbase,inverno/restbase,d00rman/restbase,wikimedia/restbase,cscott/restbase,milimetric/restbase,eevans/restbase,Krenair/restbase,physikerwelt/restbase