Better spreadsheet header
Improves spreadsheet view's appearance when showing with multi-component arrays. Now, whenever the spreadsheet is showing a multicomponent array, instead of showing a single column with components separated by "," that was often misaligned and clunky, we show them as separate columns however with a single header for all components. This makes it obvious that those columns are indeed components of the same array. One can still manually resize column width for individual component, if needed. Fixes #16126 (closed).
Furthermore, a new column for magnitude of multiple components arrays is now shown (fixes #18431 (closed)).
Also fixed some interaction issues where columns would get resized too frequently (fixes #18430 (closed)).
depends on:
Additional work/pending issues: