[8.9] [Security Solution] Modal says "duplicating 0 rules" when you d…

…uplicate an individual rule (#163908) (#164687)

# Backport

This will backport the following commits from `main` to `8.9`:
- [[Security Solution] Modal says "duplicating 0 rules" when you
duplicate an individual rule
(#163908)](#163908)

<!--- Backport version: 8.9.8 -->

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

<!--BACKPORT
[{"author":{"name":"GitStart","email":"[email protected]"},"sourceCommit":{"committedDate":"2023-08-24T07:13:17Z","message":"[Security
Solution] Modal says \"duplicating 0 rules\" when you duplicate an
individual rule (#163908)\n\n ## What does this PR do?\r\n * It fixes
the count on the duplicate modal when duplicating an individual
rule.\r\n \r\n ## Issue References\r\nFixes #162035\r\n \r\n ##
Video/Screenshot Demo\r\n ##### Steps to reproduce &
Fix:\r\nhttps://www.loom.com/share/931e42c1490d4483958b8f98dc0ba534?sid=07c67df5-b380-41a5-90f1-f64f326a12d9\r\n\r\n___\r\n
\r\n This code was written and reviewed by GitStart Community. Growing
future engineers, one PR at a
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and Resp","Team: SecuritySolution","Feature:Rule
Management","Team:Detection Rule
Management","v8.10.0","v8.9.2"],"number":163908,"url":"https://github.com/elastic/kibana/pull/163908","mergeCommit":{"message":"[Security
Solution] Modal says \"duplicating 0 rules\" when you duplicate an
individual rule (#163908)\n\n ## What does this PR do?\r\n * It fixes
the count on the duplicate modal when duplicating an individual
rule.\r\n \r\n ## Issue References\r\nFixes #162035\r\n \r\n ##
Video/Screenshot Demo\r\n ##### Steps to reproduce &
Fix:\r\nhttps://www.loom.com/share/931e42c1490d4483958b8f98dc0ba534?sid=07c67df5-b380-41a5-90f1-f64f326a12d9\r\n\r\n___\r\n
\r\n This code was written and reviewed by GitStart Community. Growing
future engineers, one PR at a
time.","sha":"59f20582605d5dcb489b6534b027ec19475e7136"}},"sourceBranch":"main","suggestedTargetBranches":["8.10","8.9"],"targetPullRequestStates":[{"branch":"8.10","label":"v8.10.0","labelRegex":"^v(\\d+).(\\d+).\\d+$","isSourceBranch":false,"state":"NOT_CREATED"},{"branch":"8.9","label":"v8.9.2","labelRegex":"^v(\\d+).(\\d+).\\d+$","isSourceBranch":false,"state":"NOT_CREATED"}]}]
BACKPORT-->

Co-authored-by: GitStart <[email protected]>

x-pack/plugins/security_solution/public/detection_engine/rule_management_ui/components/rules_table/rules_tables.tsx

@@ -242,7 +242,7 @@ export const RulesTables = React.memo<RulesTableProps>(({ selectedTab }) => {
 
   const shouldShowLinearProgress = (isFetched && isRefetching) || isUpgradingSecurityPackages;
   const shouldShowLoadingOverlay = (!isFetched && isRefetching) || isPreflightInProgress;
-  const numberOfSelectedRules = isAllSelected ? pagination.total : selectedRuleIds?.length ?? 1;
+  const rulesCount = Math.max(isAllSelected ? pagination.total : selectedRuleIds?.length ?? 0, 1);
 
   return (
     <>
@@ -284,7 +284,7 @@ export const RulesTables = React.memo<RulesTableProps>(({ selectedTab }) => {
         <BulkActionDuplicateExceptionsConfirmation
           onCancel={cancelRuleDuplication}
           onConfirm={confirmRuleDuplication}
-          rulesCount={numberOfSelectedRules}
+          rulesCount={rulesCount}
         />
       )}
       {isBulkEditFlyoutVisible && bulkEditActionType !== undefined && (