Give proxy-modifier-click-to-associated-element a dedicated bug

Bug: 1191547
Change-Id: I690e469fcb0aa47afc05bf9442a453826d372f8f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2782183
Auto-Submit: Joey Arhar <jarhar@chromium.org>
Commit-Queue: Mason Freed <masonf@chromium.org>
Reviewed-by: Mason Freed <masonf@chromium.org>
Cr-Commit-Position: refs/heads/master@{#865909}

third_party/blink/web_tests/TestExpectations

@@ -2533,7 +2533,7 @@ crbug.com/626703 external/wpt/css/css-flexbox/flexbox_justifycontent-right-002.h
 crbug.com/626703 external/wpt/css/css-flexbox/flexbox_justifycontent-start-rtl.html [ Failure ]
 crbug.com/626703 external/wpt/css/css-flexbox/flexbox_justifycontent-start.html [ Failure ]
 crbug.com/626703 external/wpt/css/css-ruby/ruby-text-collapse.html [ Failure ]
-crbug.com/626703 external/wpt/html/semantics/forms/the-label-element/proxy-modifier-click-to-associated-element.tentative.html [ Timeout ]
+crbug.com/1191547 external/wpt/html/semantics/forms/the-label-element/proxy-modifier-click-to-associated-element.tentative.html [ Timeout ]
 crbug.com/626703 external/wpt/websockets/extended-payload-length.html?wpt_flags=h2 [ Timeout ]
 crbug.com/626703 external/wpt/websockets/binary/001.html?wpt_flags=h2 [ Timeout ]
 crbug.com/626703 external/wpt/websockets/binary/002.html?wpt_flags=h2 [ Timeout ]