Pose-mode selection tools (box, lasso & circle select) now support
pose-mode when weight-painting.
Changes to the key-map [0] caused a regression where it was no longer
possible to select multiple bones because Shift-LMB is now used for
painting. The report #114981 proposes to support pose selection tools
in weight paint mode.
Note that in [1] added the tweak tool, this completes the change by
supporting other tools & fixing W-key shortcut access.
Resolves#114981.
[0]: 6de6d7267f
[1]: edcac1f48b
f647e1a5b7