stmtdiagnostics: use background context when building the bundle

[yuzefovich]

When the context is canceled, we still want to build the bundle as best as possible. Over in 532274b we introduced the usage of the background context in order to insert the bundle into the system tables, but we still built the bundle with the canceled context. This commit fixes that oversight - in particular, we should now get env.sql correctly.

Informs: https://github.com/cockroachlabs/support/issues/2494.
Epic: None

Release note: None

[blathers-crl]

It looks like your PR touches production code but doesn't add or edit any test code. Did you consider adding tests to your PR?

_{🦉 Hoot! I am a Blathers, a bot for CockroachDB. My owner is dev-inf.}

[cockroach-teamcity]

This change is 

[rharding6373]

once the build issues are fixed. Thanks for the fix!

Reviewable status: complete! 1 of 0 LGTMs obtained (waiting on @michae2 and @yuzefovich)

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pkg/sql/instrumentation.go line 469 at r1 (raw file):

	switch ih.outputMode {
	case explainAnalyzeDebugOutput:
		return setExplainBundleResult(ctx, res, bundle, cfg, warnings)

Maybe we should use the original context here and below?

[yuzefovich]

TFTR!

bors r+

Reviewable status: complete! 0 of 0 LGTMs obtained (and 1 stale) (waiting on @michae2 and @rharding6373)

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pkg/sql/instrumentation.go line 469 at r1 (raw file):

Previously, rharding6373 (Rachael Harding) wrote…

Maybe we should use the original context here and below?

I missed these usages, yeah, the original context seems right here. Done.

[craig]

Build succeeded:

• Bazel Essential CI (Cockroach)

[blathers-crl]

Encountered an error creating backports. Some common things that can go wrong:

1. The backport branch might have already existed.
2. There was a merge conflict.
3. The backport branch contained merge commits.

You might need to create your backport manually using the backport tool.

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error creating merge commit from 7d9a30f to blathers/backport-release-22.2-108071: POST https://api.github.com/repos/cockroachdb/cockroach/merges: 409 Merge conflict []

you may need to manually resolve merge conflicts with the backport tool.

Backport to branch 22.2.x failed. See errors above.

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error creating merge commit from 7d9a30f to blathers/backport-release-23.1-108071: POST https://api.github.com/repos/cockroachdb/cockroach/merges: 409 Merge conflict []

you may need to manually resolve merge conflicts with the backport tool.

Backport to branch 23.1.x failed. See errors above.

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