fix(amazonq): add handling for new limit mechanism (#6091)

## Problem

RTS changed feature dev governance interface on dealing with quota

## Solution

Added handling for this case on feature dev 

---

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Author: willyyhuang

packages/amazonq/.changes/next-release/Bug Fix-170bbb4e-ab52-4290-b803-1836b75ed415.json

@@ -0,0 +1,4 @@
+{
+	"type": "Bug Fix",
+	"description": "Amazon Q Feature Dev: display limit reached error message"
+}

packages/core/src/amazonqFeatureDev/client/featureDev.ts

@@ -171,6 +171,7 @@ export class FeatureDevClient {
                 isAwsError(e) &&
                 ((e.code === 'ThrottlingException' &&
                     e.message.includes('limit for number of iterations on a code generation')) ||
+                    e.message.includes('StartTaskAssistCodeGeneration reached for this month.') ||
                     e.code === 'ServiceQuotaExceededException')
             ) {
                 throw new CodeIterationLimitError()