fix: 1341 IR description passthrough (Azure#1343)

## Description

The IR description was left out of the main parent bicep file

Fixes Azure#1341 
Closes Azure#1341
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## Pipeline Reference

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## Type of Change

<!-- Use the check-boxes [x] on the options that are relevant. -->

- [ ] Update to CI Environment or utlities (Non-module effecting
changes)
- [x] Azure Verified Module updates:
- [ ] Bugfix containing backwards compatible bug fixes, and I have NOT
bumped the MAJOR or MINOR version in `version.json`:
- [x] Someone has opened a bug report issue, and I have included "Closes
#{bug_report_issue_number}" in the PR description.
- [ ] The bug was found by the module author, and no one has opened an
issue to report it yet.
- [ ] Feature update backwards compatible feature updates, and I have
bumped the MINOR version in `version.json`.
- [ ] Breaking changes and I have bumped the MAJOR version in
`version.json`.
  - [ ] Update to documentation

## Checklist

- [x] I'm sure there are no other open Pull Requests for the same
update/change
- [x] I have run `Set-AVMModule` locally to generate the supporting
module files.
- [x] My corresponding pipelines / checks run clean and green without
any errors or warnings

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Co-authored-by: ChrisSidebotham-MSFT <[email protected]>

avm/res/data-factory/factory/main.bicep

@@ -172,6 +172,7 @@ module dataFactory_integrationRuntimes 'integration-runtime/main.bicep' = [for (
     dataFactoryName: dataFactory.name
     name: integrationRuntime.name
     type: integrationRuntime.type
+    interagrationRuntimeCustomDescription: integrationRuntime.?interagrationRuntimeCustomDescription ?? 'Managed Integration Runtime created by avm-res-datafactory-factories'
     managedVirtualNetworkName: contains(integrationRuntime, 'managedVirtualNetworkName') ? integrationRuntime.managedVirtualNetworkName : ''
     typeProperties: contains(integrationRuntime, 'typeProperties') ? integrationRuntime.typeProperties : {}
   }

avm/res/data-factory/factory/main.json

@@ -6,7 +6,7 @@
     "_generator": {
       "name": "bicep",
       "version": "0.26.54.24096",
-      "templateHash": "17591619092727607098"
+      "templateHash": "18305717161046402755"
     },
     "name": "Data Factories",
     "description": "This module deploys a Data Factory.",
@@ -1026,6 +1026,9 @@
           "type": {
             "value": "[parameters('integrationRuntimes')[copyIndex()].type]"
           },
+          "interagrationRuntimeCustomDescription": {
+            "value": "[coalesce(tryGet(parameters('integrationRuntimes')[copyIndex()], 'interagrationRuntimeCustomDescription'), 'Managed Integration Runtime created by avm-res-datafactory-factories')]"
+          },
           "managedVirtualNetworkName": "[if(contains(parameters('integrationRuntimes')[copyIndex()], 'managedVirtualNetworkName'), createObject('value', parameters('integrationRuntimes')[copyIndex()].managedVirtualNetworkName), createObject('value', ''))]",
           "typeProperties": "[if(contains(parameters('integrationRuntimes')[copyIndex()], 'typeProperties'), createObject('value', parameters('integrationRuntimes')[copyIndex()].typeProperties), createObject('value', createObject()))]"
         },