Add bulk delete of sessions on jbrowse-desktop

[cmdcolin]

Using the cards, you still delete entries 1-by-1 but the table view offers a bulk delete

Also upgrades @material-ui/[email protected] to @mui/[email protected] (stable release) which is compatible with mui 4

[codecov]

Codecov Report

Merging #2387 (e82f9c2) into main (ad60c1d) will decrease coverage by 0.00%.
The diff coverage is 0.00%.

❗ Current head e82f9c2 differs from pull request most recent head 879e44c. Consider uploading reports for the commit 879e44c to get more accurate results

@@            Coverage Diff             @@
##             main    #2387      +/-   ##
==========================================
- Coverage   61.05%   61.04%   -0.01%     
==========================================
  Files         533      533              
  Lines       24560    24554       -6     
  Branches     5767     5769       +2     
==========================================
- Hits        14994    14988       -6     
- Misses       9244     9250       +6     
+ Partials      322      316       -6     

Impacted Files	Coverage Δ
...kages/core/BaseFeatureWidget/BaseFeatureDetail.tsx	75.36% <ø> (ø)
packages/core/ReExports/modules.ts	75.00% <ø> (ø)
...idBookmarkWidget/components/GridBookmarkWidget.tsx	90.24% <ø> (ø)
.../src/VariantFeatureWidget/VariantFeatureWidget.tsx	40.78% <ø> (ø)
...se-desktop/src/StartScreen/RecentSessionsPanel.tsx	0.00% <0.00%> (ø)
...ts/jbrowse-desktop/src/StartScreen/SessionCard.tsx	0.00% <0.00%> (ø)
...op/src/StartScreen/dialogs/DeleteSessionDialog.tsx	0.00% <0.00%> (ø)
products/jbrowse-desktop/src/StartScreen/index.tsx	0.00% <ø> (ø)
...nts/src/SNPCoverageRenderer/SNPCoverageRenderer.ts	80.24% <0.00%> (-7.41%)	⬇️
packages/core/util/index.ts	79.84% <0.00%> (ø)
... and 6 more

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