[8.15] [Security Solution][Detection Engine] fixes misaligned dropdown for page selector on shared exception lists page (#187956) (#188299)

# Backport

This will backport the following commits from `main` to `8.15`:
- [[Security Solution][Detection Engine] fixes misaligned dropdown for
page selector on shared exception lists page
(#187956)](https://github.com/elastic/kibana/pull/187956)

<!--- Backport version: 9.4.3 -->

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

<!--BACKPORT [{"author":{"name":"Vitalii
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Solution][Detection Engine] fixes misaligned dropdown for page selector
on shared exception lists page (#187956)\n\n## Summary\r\n\r\n-
addresses https://github.com/elastic/kibana/issues/180459\r\n\r\n###
Before\r\n<img width=\"2464\" alt=\"Screenshot 2024-07-10 at 11 51
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After\r\n<img width=\"2469\" alt=\"Screenshot 2024-07-10 at 11 51
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Checklist\r\n\r\nDelete any items that are not applicable to this
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on shared exception lists page (#187956)\n\n## Summary\r\n\r\n-
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Before\r\n<img width=\"2464\" alt=\"Screenshot 2024-07-10 at 11 51
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After\r\n<img width=\"2469\" alt=\"Screenshot 2024-07-10 at 11 51
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Checklist\r\n\r\nDelete any items that are not applicable to this
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[cross-browser\r\ncompatibility](https://www.elastic.co/support/matrix#matrix_browsers)","sha":"7d61b7e99fd277ba61d4e8b0881393d427900c99"}},"sourceBranch":"main","suggestedTargetBranches":["8.15"],"targetPullRequestStates":[{"branch":"8.15","label":"v8.15.0","branchLabelMappingKey":"^v(\\d+).(\\d+).\\d+$","isSourceBranch":false,"state":"NOT_CREATED"},{"branch":"main","label":"v8.16.0","branchLabelMappingKey":"^v8.16.0$","isSourceBranch":true,"state":"MERGED","url":"https://github.com/elastic/kibana/pull/187956","number":187956,"mergeCommit":{"message":"[Security
Solution][Detection Engine] fixes misaligned dropdown for page selector
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Before\r\n<img width=\"2464\" alt=\"Screenshot 2024-07-10 at 11 51
45\"\r\nsrc=\"497f87d3-7aaa-44d2-af59-d99159f51aee\">\r\n\r\n###
After\r\n<img width=\"2469\" alt=\"Screenshot 2024-07-10 at 11 51
02\"\r\nsrc=\"94be32ed-b8f1-4544-87e8-d8a15568cf65\">\r\n\r\n###
Checklist\r\n\r\nDelete any items that are not applicable to this
PR.\r\n\r\n- [x] This was checked for
[cross-browser\r\ncompatibility](https://www.elastic.co/support/matrix#matrix_browsers)","sha":"7d61b7e99fd277ba61d4e8b0881393d427900c99"}}]}]
BACKPORT-->

Co-authored-by: Vitalii Dmyterko <92328789+vitaliidm@users.noreply.github.com>

x-pack/plugins/security_solution/public/exceptions/pages/shared_lists/index.tsx

@@ -611,7 +611,7 @@ export const SharedLists = React.memo(() => {
           </>
         )}
         <EuiFlexGroup>
-          <EuiFlexItem style={{ flex: '1 1 auto' }}>
+          <EuiFlexItem grow={false}>
             <EuiFlexGroup alignItems="flexStart">
               <EuiFlexItem>
                 <EuiPopover