fix: Updated solutionPrefix param in main.bicep to ensure resources name should be unique in each deployment.

[NirajC-Microsoft]

This pull request includes a minor update to the infra/main.bicep file to enhance the uniqueness of the solutionPrefix parameter by incorporating the resource group's name into the unique string generation.

• Enhancement to parameter uniqueness:
  • infra/main.bicep: Modified the solutionPrefix parameter to include resourceGroup().name in the unique string generation, ensuring greater uniqueness for resource identifiers.## Purpose

• ...

Does this introduce a breaking change?

• Yes
• No

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🎉 This PR is included in version 2.2.0 🎉

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