Rename the blocklyTreeLabel CSS class to blocklyToolboxCategoryLabel

[BeksOmega]

Rename any references to blocklyTreeLabel to blocklyToolboxCategoryLabel.

This change should be made against the rc/v12.0.0 branch. This should be marked as a breaking change.

To work on this issue, comment below asking to be assigned.

[YashrajKupekar17]

@BeksOmega I would like to work on this issue, please assign this to me.

[BeksOmega]

Go for it @YashrajKupekar17 ! Thanks for picking this up =)

[harsh-791]

@BeksOmega i would like to work on this issue

[siddharthbaleja7]

is this issue still open?

[BeksOmega]

Yep looks like this hasn't been worked on. Go for it @siddharthbaleja7 =) Let me know if you have questions!

[DevMhrn]

@BeksOmega I have collaborated with @siddharthbaleja7 ans solved this issue he unassigned himself so that I can solve this. I have solved this and could raise pr for it

[DevMhrn]

@BeksOmega Please review this pr. I have solved this issue

[srivastavaarpit977]

@BeksOmega ...I have collaborated with @DevMhrn,he is not active to solve this issue so can you plz assign this issue to me!!

[BeksOmega]

Done @srivastavaarpit977 =)

[srivastavaarpit977]

@BeksOmega plz review the PR...I have solved the issue.Thanks!!