Add strict HasPopup type for AutomationNode.prototype.hasPopup

R=katie@chromium.org

Bug: none
Test: webui_closure_compile and ui/accessibilityPRESUBMIT.py pass. For the latter, make a small, temp commit to u/a/ax_enums.mojom to trigger the upload presubmit error.
Change-Id: I426de213804a2b2f3dd4841f23ef3923a0129199
AX-Relnotes: n/a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2774229
Commit-Queue: David Tseng <dtseng@chromium.org>
Reviewed-by: Katie Dektar <katie@chromium.org>
Cr-Commit-Position: refs/heads/master@{#864813}
GitOrigin-RevId: 4478460b7adf6048581a103ccbf582653423e845
1 file changed