fix(amazonq): revert disable event handler #6191

## Problem
Applying a fix does not update the position of other issues in the same
file.

## Solution
Revert disabling event handler on apply fix command

Author: ctlai95

packages/amazonq/.changes/next-release/Bug Fix-64bec56a-f152-4345-b036-0c5ddb0ce5a2.json

@@ -0,0 +1,4 @@
+{
+	"type": "Bug Fix",
+	"description": "Code Review: Fixed a bug where applying a fix did not update the positions of other issues in the same file."
+}

packages/core/src/codewhisperer/commands/basicCommands.ts

@@ -464,7 +464,6 @@ export const applySecurityFix = Commands.declare(
                 new vscode.Range(document.lineAt(0).range.start, document.lineAt(document.lineCount - 1).range.end),
                 updatedContent
             )
-            SecurityIssueProvider.instance.disableEventHandler()
             const isApplied = await vscode.workspace.applyEdit(edit)
             if (isApplied) {
                 void document.save().then((didSave) => {

packages/core/src/codewhisperer/service/securityIssueProvider.ts

@@ -12,7 +12,6 @@ export class SecurityIssueProvider {
     }
 
     private _issues: AggregatedCodeScanIssue[] = []
-    private _disableEventHandler: boolean = false
     public get issues() {
         return this._issues
     }
@@ -21,19 +20,11 @@ export class SecurityIssueProvider {
         this._issues = issues
     }
 
-    public disableEventHandler() {
-        this._disableEventHandler = true
-    }
-
     public handleDocumentChange(event: vscode.TextDocumentChangeEvent) {
         // handleDocumentChange function may be triggered while testing by our own code generation.
         if (!event.contentChanges || event.contentChanges.length === 0) {
             return
         }
-        if (this._disableEventHandler) {
-            this._disableEventHandler = false
-            return
-        }
         const { changedRange, lineOffset } = event.contentChanges.reduce(
             (acc, change) => ({
                 changedRange: acc.changedRange.union(change.range),