always use the latest header values for introspection

[thomasheyenbrock]

Fixes #2442

After introducing the schema context, we might dispatch introspection queries after the initial one that don't use the latest header values, but the initial ones. This PR fixes this:

• We derive the initial editor values in the EditorContextProvider and also expose them on the context value. The editor hooks don't need to do this logic anymore and can just consume the initial value from the context.
• Also syncing the prop value with the editor state (i.e. the calls to useSynchronizeValue) have been moved to the EditorContextProvider, that way we only need to pass the defaultQuery, query, variables, and headers prop to the context provider and not also the editor hooks.
• We consume the editor context inside the SchemaContextProvider to make sure that we use the latest header values when initializing an introspection request.

[changeset-bot]

🦋 Changeset detected

Latest commit: b4aa4d8

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 2 packages

Name	Type
graphiql	Patch
@graphiql/react	Patch

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[codecov]

Codecov Report

Merging #2451 (b4aa4d8) into main (2d91916) will increase coverage by 3.86%.
The diff coverage is 69.52%.

@@            Coverage Diff             @@
##             main    #2451      +/-   ##
==========================================
+ Coverage   65.70%   69.57%   +3.86%     
==========================================
  Files          85       71      -14     
  Lines        5106     4388     -718     
  Branches     1631     1452     -179     
==========================================
- Hits         3355     3053     -302     
+ Misses       1747     1330     -417     
- Partials        4        5       +1     

Impacted Files	Coverage Δ
packages/codemirror-graphql/src/hint.ts	94.73% <ø> (ø)
packages/codemirror-graphql/src/lint.ts	100.00% <ø> (ø)
packages/codemirror-graphql/src/results/mode.ts	47.05% <ø> (ø)
...kages/codemirror-graphql/src/utils/forEachState.ts	100.00% <ø> (ø)
packages/codemirror-graphql/src/utils/hintList.ts	95.65% <ø> (ø)
...ckages/codemirror-graphql/src/utils/mode-indent.ts	0.00% <0.00%> (ø)
packages/codemirror-graphql/src/variables/hint.ts	89.70% <ø> (ø)
packages/codemirror-graphql/src/variables/mode.ts	79.48% <ø> (ø)
packages/graphiql-react/src/editor/whitespace.ts	100.00% <ø> (ø)
packages/graphiql-toolkit/src/storage/query.ts	36.73% <ø> (ø)
... and 90 more

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[github-actions]

The latest changes of this PR are not available as canary, since there are no linked changesets for this PR.