chore(tests): [AdsAdManager] avoid variable name conflict (#8683)

* chore(tests): avoid variable name conflict

PiperOrigin-RevId: 824648432

Source-Link: googleapis/googleapis@7a87bf0

Source-Link: googleapis/googleapis-gen@6d65fd3
Copy-Tag: eyJwIjoiQWRzQWRNYW5hZ2VyLy5Pd2xCb3QueWFtbCIsImgiOiI2ZDY1ZmQzMWRmMzRiODFiYzAyNzMwMjYwN2IyYzk2OWM4NDVjZDE4In0=

feat: Added Application resource
feat: Added AudienceSegment resource
feat: Added Browser resource
feat: Added BrowserLanguage resource
feat: Added CmsMetadataKey resource
feat: Added CmsMetadataValue resource
feat: Added methods for reading and writing Contact resources
feat: Added DeviceCapability resource
feat: Added DeviceManufacturer resource
feat: Added MobileCarrier resource
feat: Added MobileDevice resource
feat: Added MobileDeviceSubmodel resource
feat: Added additional Report dimensions and metrics
feat: Added Content resource
feat: Added ContentBundle resource
feat: Added ContentLabel resource
feat: Added CreativeTemplate resource
feat: Added Team resource
feat!: Added required field `displayName` to Team
feat: Added Site resource
feat: Added AdReviewCenterAd methods
fix!: Made AdUnitSize fields proto3 optional
fix!: Made Label fields proto3 optional
fix!: Made Contact fields proto3 optional
feat!: Added required fields `displayName` and `company` to Contact
fix!: Made Company fields proto3 optional
fix!: Moved multiple Report messages and submessages
fix!: Renamed ReportDefinition.Dimensions PROGRAMMATIC_BUYER_ID and PROGRAMMATIC_BUYER_NAME to DEAL_BUYER_ID and DEAL_BUYER_NAME
fix!: Renamed ReportDefinition.Dimension AD_SERVER_UNFILTERED_IMPRESSIONS to AD_SERVER_UNFILTERED_DOWNLOADED_IMPRESSIONS
docs: Clarified pagination defaults for List methods

PiperOrigin-RevId: 822617305

Source-Link: googleapis/googleapis@1615c51

Source-Link: googleapis/googleapis-gen@359756d
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