Update web version 0.78.0

[github-actions]

Release notes https://github.com/deephaven/web-client-ui/releases/tag/v0.78.0

Bug Fixes

• "Delete Selected Rows" bug for tables with no key columns (#1996) (37fe009)
• Improve the look of the error view (#2001) (3236c9b)
• PouchStorageTable using incorrect $ne operator (#2011) (6cf1240)
• Use picker for iris grid partition selector (#2012) (b61c518)
• useViewportData - memoize subscriptions and first row of viewport (#2008) (2246a4a)

Code Refactoring

• Rename ButtonGroup to SplitButtonGroup (#1997) (95a589c)

Features

• Add JS Plugin Information (#2002) (6ff378c)
• add middle click dashboard tab deletion (#1992) (c922f87)
• ListView actions (#1968) (8e325ec)
• Make grid widget respect global formatter settings (#1995) (d1fba8f)
• update @vscode/codicons to 0.36 (#2010) (3a6a439)

Performance Improvements

• Improve performance of lots of grids in a dashboard (#1987) (3de52d6)

BREAKING CHANGES

• Renamed @deephaven/components ButtonGroup to
  SplitButtonGroup