[8.9] [Ops] Fix @kbn/imports/no_unused_imports rule (#164870) (#164907)

# Backport

This will backport the following commits from `main` to `8.9`:
- [[Ops] Fix @kbn/imports/no_unused_imports rule
(#164870)](#164870)

<!--- Backport version: 8.9.7 -->

### Questions ?
Please refer to the [Backport tool
documentation](https://github.com/sqren/backport)

<!--BACKPORT [{"author":{"name":"Alex
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Fix @kbn/imports/no_unused_imports rule (#164870)\n\n##
Summary\r\n@jloleysens reported that ESLint breaks (probably in IDEs
only) because\r\nof this bug. When there's an unused import, linting
stops for the whole\r\nfile.\r\n\r\nBy adding this flag, it no longer
breaks on my machine, however,\r\nauto-fixing still doesn't work from
the CLI. The IDE auto-fixes because\r\nit also recognizes it as a
non-unsed variable.\r\n\r\n- add `meta.hasSuggestions` to
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Fix @kbn/imports/no_unused_imports rule (#164870)\n\n##
Summary\r\n@jloleysens reported that ESLint breaks (probably in IDEs
only) because\r\nof this bug. When there's an unused import, linting
stops for the whole\r\nfile.\r\n\r\nBy adding this flag, it no longer
breaks on my machine, however,\r\nauto-fixing still doesn't work from
the CLI. The IDE auto-fixes because\r\nit also recognizes it as a
non-unsed variable.\r\n\r\n- add `meta.hasSuggestions` to
`@kbn/imports/no_unused_imports` prevent\r\nESLint from
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Fix @kbn/imports/no_unused_imports rule (#164870)\n\n##
Summary\r\n@jloleysens reported that ESLint breaks (probably in IDEs
only) because\r\nof this bug. When there's an unused import, linting
stops for the whole\r\nfile.\r\n\r\nBy adding this flag, it no longer
breaks on my machine, however,\r\nauto-fixing still doesn't work from
the CLI. The IDE auto-fixes because\r\nit also recognizes it as a
non-unsed variable.\r\n\r\n- add `meta.hasSuggestions` to
`@kbn/imports/no_unused_imports` prevent\r\nESLint from
breaking","sha":"d8d355dd7b4184127a760261178daf0f8a94af86"}}]}]
BACKPORT-->

Co-authored-by: Alex Szabo <[email protected]>

packages/kbn-eslint-plugin-imports/src/rules/no_unused_imports.ts

@@ -78,6 +78,7 @@ function isTsOrEslintIgnore(comment: Comment) {
 
 export const NoUnusedImportsRule: Rule.RuleModule = {
   meta: {
+    hasSuggestions: true,
     fixable: 'code',
     docs: {
       url: 'https://github.com/elastic/kibana/blob/main/packages/kbn-eslint-plugin-imports/README.mdx#kbnimportsno_unused_imports',