Blender Git Loki

Fix T92469: Transform tools inaccessible in weight-paint + pose mode

Expose transform tools when in weight paint mode with pose-mode enabled,
displaying transform tools in the toolbar, as is already done in
object & pose mode.

These are only shown when weight-paint + pose mode are active at once.

This allows single key-strokes to activate tools, needed when
tool-access is set as the default action for G/R/S key bindings.

Reviewed By: JulienKaspar

Ref D13028