Exception handling in interactive mode does not report cause

[fmbenhassine]

Reported by @gturner834 in #1259 (Point 7):

• 3.4.1:

  shell:>cm certify --certificationDate 2025-11-18
  COSN021-003E:Period code is required, specified by either "cm certify --periodCd" or "xme config --periodCode" commands(srcApplicationId:CostAllocationApp)(correlationId:fc1063dc-32c5-424f-9687-033cba8cbfc7)
  Details of the error have been omitted. You can use the stacktrace command to print the full stacktrace.
  

  • This exception was intentional, displayed perfectly in red color, and with working stacktrace command.
• 4.0.0:

  shell:>cm certify --certificationDate 2025-11-18
  Unable to run command cm: null
  shell:>stacktrace
  Command stacktrace not found
  

  • The "null" message comes Shell not looking at the root cause of the TargetInvocationException.
  • The message is printed without color.
  • Also note the truncated command name "cm" instead of "cm certify".