[Tabs] Tab activates onMouseDown, breaking WCAG 2.5.2: Pointer-cancellation

[KenAJoh]

Bug report

Current Behavior

Clicking on a tab currently activates onMouseDown

Expected behavior

Click on tab should activate onMouseUp (or onClick), allowing user to cancel activation if needed.

Additional context

primitives/packages/react/tabs/src/Tabs.tsx

Line 182 in 81b25f4

onMouseDown={composeEventHandlers(props.onMouseDown, (event) => {

Wcag 2.5.2: Pointer Cancellation (Level A)

No Down-Event
The down-event of the pointer is not used to execute any part of the function;

Abort or Undo
Completion of the function is on the up-event, and a mechanism is available to abort the function before completion or to undo the function after completion;

Up Reversal
The up-event reverses any outcome of the preceding down-event;

Essential
Completing the function on the down-event is essential.