ui: Add `text_ellipsis` method to `Label`s #37680

Job	Run time
Check Postgres and Protobuf migrations, mergability	13s
Check formatting and spelling	21s
(Linux) Run Clippy and tests	16m 23s
(macOS) Run Clippy and tests	6m 17s
(Linux) Build Remote Server	1m 45s
(Windows) Run Clippy and tests	7m 46s
Create a macOS bundle	0s
Create arm64 Linux bundle	0s
Create a Linux bundle	0s
Auto release preview	0s
	32m 45s

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