Bug 1941899 [wpt PR 50108] - Update wpt metadata, a=testonly

wpt-pr: 50108
wpt-type: metadata

Author: moz-wptsync-bot

testing/web-platform/meta/html/semantics/forms/the-select-element/customizable-select/select-innertext.tentative.html.ini

@@ -0,0 +1,12 @@
+[select-innertext.tentative.html]
+  [<select> innerText with old content model and appearance:auto.]
+    expected: FAIL
+
+  [<select> innerText with new content model and appearance:auto.]
+    expected: FAIL
+
+  [<select> innerText with new content model and appearance:base-select.]
+    expected: FAIL
+
+  [<select> innerText with new content model and appearance:base-select with picker open.]
+    expected: FAIL