Same pattern as is now used in VisualEditor. Generate an initial session
ID when the file loads, so if any VisualEditorFeatureUse events trigger
before the init there'll be a session ID for them to use.
Bug: T275051
Change-Id: I4f25e9e1e195c11129044868eb67fcc2f4494ffd
If DiscussionToolsABTest is enabled (set to `all` or a feature), logged
in users who have never used the tool before will be assigned to an a/b
test bucket. If they're in the test bucket, they get the feature
enabled.
If they manually set their beta feature preference, we don't override
that but do maintain their bucket for logging purposes.
Bug: T268191
Change-Id: I9c4d60e9f9aaef11afa7f8661b9c49130dde3ffa
Also, stop the dialog-prevent-show event from switching editor_interface
just because it's tied to the `editor-switch` feature.
Bug: T259673
Change-Id: I2acf9d79add281ed0f62f022e44bb18948ceafc8
