docs: add performance advice to disable default menu creation

[bpasero]

Description of Change

Fixes #35512

Checklist

• PR description included and stakeholders cc'd
• npm test passes
• tests are changed or added
• relevant documentation is changed or added
• PR release notes describe the change in a way relevant to app developers, and are capitalized, punctuated, and past tense.

Release Notes

Notes: docs: add performance advice to disable default menu creation

[welcome]

💖 Thanks for opening this pull request! 💖

We use semantic commit messages to streamline the release process. Before your pull request can be merged, you should update your pull request title to start with a semantic prefix.

Examples of commit messages with semantic prefixes:

• fix: don't overwrite prevent_default if default wasn't prevented
• feat: add app.isPackaged() method
• docs: app.isDefaultProtocolClient is now available on Linux

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[bpasero]

This is good to go now, I made the text a bit more verbose and easier to read.

[codebytere]

Lint failure:

docs/tutorial/performance.md:424:76 MD009/no-trailing-spaces Trailing spaces [Expected: 0; Actual: 1]
docs/tutorial/performance.md:430:74 MD009/no-trailing-spaces Trailing spaces [Expected: 0; Actual: 1]

[ckerr]

Invoke-RestMethod : {"message":"Artifact not found or access denied."}

CI failure appears to be unrelated to the PR and we've got three approvals, so I'm going to merge this.

[nornagon]

It's a little surprising that this is so expensive! Is there any way we can work around this technically?

[release-clerk]

Release Notes Persisted

docs: add performance advice to disable default menu creation