Review pat-tooltip positioning algorithm

[pilz]

When a tooltip opens and there is not enough space below or above, it should choose the middle position. Currently it doesn't do that. Fix it.

Also when in progress, it adds the tag . To be consistent with other patterns, this should be a class "injecting" instead.

[pilz]

Next steps:

• Await completion of new tooltip styling in oira
• Add the new tooltip pattern to quaive proto
• Reassess problem with new pattern.

[cornae]

This ticket is no longer relevant.