Joffrey JAFFEUX 92797109ba DEV: uses container resize event instead of mutation (#20757) ... This commit takes advantage of the `ResizeObserver` to know when dates should be re-computed, it works like this: ``` scrollable-div -- child-enclosing-div with resize observer ---- message 1 ---- message 2 ---- message x ``` It also switches to bottom/height for date separators sizing, instead of bottom/top, it prevents a bug where setting the top of the first item (at the top) would cause scrollbar to move to top. <!-- NOTE: All pull requests should have tests (rspec in Ruby, qunit in JavaScript). If your code does not include test coverage, please include an explanation of why it was omitted. -->		2023-03-21 11:30:32 +01:00
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javascripts	DEV: uses container resize event instead of mutation (#20757)	2023-03-21 11:30:32 +01:00