test: Use fake clicks for the Run Image "Local" button with Firefox

The "Local button click goes to Nirvana in CI" happens with Firefox as
well. So upgrade the `chromium_fake_mouse` to "specify coordinates"
which activates fake clicks on all browsers.

This is being debugged in #2175, until then avoid the flakes.

Author: martinpitt

test/check-application

@@ -1749,9 +1749,8 @@ PodName={podName}
         # No local results found
         b.set_input_text("#create-image-image input", "notfound")
 
-        b.chromium_fake_mouse = True  # FIXME; BiDi clicks flake in CI
-
-        b.click('button.pf-v6-c-toggle-group__button:contains("Local")')
+        # FIXME; BiDi clicks flake in CI (both Chromium and Firefox)
+        b.mouse('button.pf-v6-c-toggle-group__button:contains("Local")', "click", y=1)
         b.wait_text(".pf-v6-c-menu__item[disabled]", "No images found")
         b.wait_visible("button.pf-v6-c-toggle-group__button.pf-m-selected:contains('Local')")
 
@@ -1785,8 +1784,6 @@ PodName={podName}
         self.assertFalse(b.is_present(".pf-v6-c-popover"))
         b.wait_val("#create-image-image input", "my-busybox")
 
-        b.chromium_fake_mouse = False
-
         # Select image
         b.click('button.pf-v6-c-menu__item:contains("localhost:5000/my-busybox")')
 
@@ -1815,15 +1812,14 @@ PodName={podName}
         b.set_input_text("#create-image-image input", "no-container")
         b.wait_text(".pf-v6-c-menu__item[disabled]", "No images found")
         # Search with full url
-        b.chromium_fake_mouse = True  # FIXME; BiDi clicks flake in CI
         b.set_input_text("#create-image-image input", "localhost:5000/my-busybox")
-        b.click('button.pf-v6-c-toggle-group__button:contains("Local")')
+        # FIXME; BiDi clicks flake in CI (both Chromium and Firefox)
+        b.mouse('button.pf-v6-c-toggle-group__button:contains("Local")', "click", y=1)
         b.wait_visible("button.pf-v6-c-toggle-group__button.pf-m-selected:contains('Local')")
         b.wait_not_in_text(".pf-v6-c-menu__content", "Local images")
 
         # Select image
         b.click('button.pf-v6-c-menu__item:contains("localhost:5000/my-busybox")')
-        b.chromium_fake_mouse = False
 
         # Pull the latest image
         b.set_checked("#run-image-dialog-pull-latest-image", val=True)