terminal: handle `mousedown` event of `WebTermView` in capture phase
terminal: handle `mousedown` event of `WebTermView` in capture phase

Set `mousedownHappened` flag of terminal.

jack89129/koding,mertaytore/koding,cihangir/koding,drewsetski/koding,szkl/koding,alex-ionochkin/koding,rjeczalik/koding,andrewjcasal/koding,mertaytore/koding,kwagdy/koding-1,rjeczalik/koding,drewsetski/koding,gokmen/koding,kwagdy/koding-1,kwagdy/koding-1,rjeczalik/koding,koding/koding,andrewjcasal/koding,gokmen/koding,szkl/koding,jack89129/koding,drewsetski/koding,usirin/koding,kwagdy/koding-1,acbodine/koding,szkl/koding,mertaytore/koding,andrewjcasal/koding,jack89129/koding,acbodine/koding,szkl/koding,andrewjcasal/koding,alex-ionochkin/koding,usirin/koding,szkl/koding,jack89129/koding,jack89129/koding,acbodine/koding,cihangir/koding,acbodine/koding,rjeczalik/koding,usirin/koding,sinan/koding,cihangir/koding,acbodine/koding,alex-ionochkin/koding,mertaytore/koding,gokmen/koding,kwagdy/koding-1,drewsetski/koding,drewsetski/koding,alex-ionochkin/koding,gokmen/koding,cihangir/koding,gokmen/koding,sinan/koding,andrewjcasal/koding,sinan/koding,andrewjcasal/koding,drewsetski/koding,sinan/koding,kwagdy/koding-1,mertaytore/koding,usirin/koding,drewsetski/koding,koding/koding,szkl/koding,usirin/koding,acbodine/koding,alex-ionochkin/koding,sinan/koding,gokmen/koding,alex-ionochkin/koding,kwagdy/koding-1,rjeczalik/koding,mertaytore/koding,usirin/koding,koding/koding,jack89129/koding,gokmen/koding,cihangir/koding,kwagdy/koding-1,acbodine/koding,mertaytore/koding,mertaytore/koding,cihangir/koding,drewsetski/koding,usirin/koding,andrewjcasal/koding,szkl/koding,rjeczalik/koding,gokmen/koding,cihangir/koding,jack89129/koding,cihangir/koding,andrewjcasal/koding,acbodine/koding,koding/koding,koding/koding,koding/koding,rjeczalik/koding,alex-ionochkin/koding,koding/koding,szkl/koding,sinan/koding,sinan/koding,sinan/koding,koding/koding,alex-ionochkin/koding,rjeczalik/koding,jack89129/koding,usirin/koding