Fix for no deployments in a workspace

[kushalmalani]

Description

Describe the purpose of this pull request.

Fix for no deployments in a workspace. Display proper error messaging.

🎟 Issue(s)

Related #1283

🧪 Functional Testing

List the functional testing steps to confirm this feature or fix.

📸 Screenshots

Add screenshots to illustrate the validity of these changes.

📋 Checklist

• Rebased from the main (or release if patching) branch (before testing)
• Ran make test before taking out of draft
• Ran make lint before taking out of draft
• Added/updated applicable tests
• Tested against Astro-API (if necessary).
• Tested against Houston-API and Astronomer (if necessary).
• Communicated to/tagged owners of respective clients potentially impacted by these changes.
• Updated any related documentation

[codecov]

Codecov Report

Patch coverage: 94.11% and no project coverage change.

Comparison is base (4fbffff) 87.31% compared to head (c5e2cb0) 87.31%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1292   +/-   ##
=======================================
  Coverage   87.31%   87.31%           
=======================================
  Files         113      113           
  Lines       13255    13264    +9     
=======================================
+ Hits        11573    11582    +9     
  Misses        992      992           
  Partials      690      690           

Impacted Files	Coverage Δ
cloud/deployment/inspect/inspect.go	86.79% <80.00%> (+0.18%)	⬆️
cloud/deployment/workerqueue/workerqueue.go	98.30% <100.00%> (+0.02%)	⬆️
cmd/cloud/deployment_workerqueue.go	100.00% <100.00%> (ø)

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