[PLAT-7663] Fix state/metadata set in renderer config not being cleared

[yousif-bugsnag]

Goal

Any state/metadata that was added in a renderer's configuration could no be removed from that renderer

This is because we send the renderer config values to the main process, but they were also stored locally in the renderer client (because it’s using the same code as all other JS platforms)

This means both the renderer and main processes had a copy of the state, but methods like clearMetadata and clearFeatureFlags only talk to the main process

This affected user, context metadata and featureFlags config

Changeset

Updated plugin-electron-renderer-client-state-updates to clear any state from the renderer client once it has been synched to the main process

Testing

• Manually tested clearing user, context metadata and featureFlags set in renderer config
• Added a unit test to ensure that this state is not stored in the renderer client
• Added integration tests to ensure that any state set in the renderer config can be cleared and will not be attached to subsequent events from that renderer

[github-actions]

@bugsnag/browser bundle size diff

	Minified	Minfied + Gzipped
Before	43.19 kB	13.21 kB
After	43.19 kB	13.21 kB
±	No change	No change

code coverage diff

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Generated by 🚫 dangerJS against 590215b

[yousif-bugsnag]

If you clear the renderer context it reverts to the default context, which is the html <title> tag