chore: encourage adding reproductions to issues (#42667)

Issues being reported without a reproduction take longer to
triage/resolve. To make the process faster, we should encourage people
always to add one.

## Bug

- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Errors have a helpful link attached, see `contributing.md`

## Feature

- [ ] Implements an existing feature request or RFC. Make sure the
feature request has been accepted for implementation before opening a
PR.
- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Documentation added
- [ ] Telemetry added. In case of a feature if it's used or not.
- [ ] Errors have a helpful link attached, see `contributing.md`

## Documentation / Examples

- [ ] Make sure the linting passes by running `pnpm build && pnpm lint`
- [ ] The "examples guidelines" are followed from [our contributing
doc](https://github.com/vercel/next.js/blob/canary/contributing/examples/adding-examples.md)

.github/ISSUE_TEMPLATE/1.bug_report.yml

@@ -43,7 +43,7 @@ body:
       required: true
   - type: input
     attributes:
-      label: Link to reproduction
+      label: Link to reproduction - Issues with a link to complete (but minimal) reproduction code will be addressed faster
       description: A link to a GitHub repository, a [StackBlitz](https://stackblitz.com/fork/github/vercel/next.js/tree/canary/examples/reproduction-template), or a [CodeSandbox](https://codesandbox.io/s/github/vercel/next.js/tree/canary/examples/reproduction-template) minimal reproduction. Minimal reproductions should be created from our [bug report template with `npx create-next-app -e reproduction-template`](https://github.com/vercel/next.js/tree/canary/examples/reproduction-template) and should include only changes that contribute to the issue.
     validations:
       required: true