Get-AzSqlDatabaseRestorePoint Only Returns Earliest Restore Point not All

### Type of issue

Other (describe below)

### Feedback

`Get-AzSqlDatabaseRestorePoint -ResourceGroupName "xxx" -ServerName "xxx" -DatabaseName "xxx"

ResourceGroupName : xxx
ServerName : xxx
DatabaseName : xxx
Location : xxx
RestorePointType : Continuous
RestorePointCreationDate :
EarliestRestoreDate : 5/10/2024 3:58:13 PM
RestorePointLabel `

### Page URL

https://learn.microsoft.com/en-us/powershell/module/az.sql/get-azsqldatabaserestorepoint?view=azps-11.6.0&tryIt=true&source=docs#code-try-1

### Content source URL

https://github.com/Azure/azure-powershell/blob/main/src/Sql/Sql/help/Get-AzSqlDatabaseRestorePoint.md

### Author

@mikefrobbins

### Document Id

3027a244-13f3-14da-d4e9-0caa8b20de30

Start with src/Sql/Sql/help/Get-AzSqlDatabaseRestorePoint.md and reproduce the documented Get-AzSqlDatabaseRestorePoint example against a database with multiple restore points. Trace the cmdlet entry point to determine whether the implementation or help is responsible for returning only the earliest point. Done means the cmdlet returns all expected restore points and the documentation matches its behavior.

Written by the indexing model from the issue text.