test(collection): refactor overall unittests of x/collection

[tkxkd0159]

Description

closes: #XXXX

• remove deterministic flag. Only test with random addresses, but events can be generated by those value
• remove all helper functions for generating a event
• add some global test helper functions to reduce repetition
• add more test for MsgOperatorBurnFT

Motivation and context

How has this been tested?

Screenshots (if appropriate):

Checklist:

• I followed the contributing guidelines and code of conduct.
• I have added a relevant changelog to CHANGELOG.md
• I have added tests to cover my changes.
• I have updated the documentation accordingly.
• I have updated API documentation client/docs/swagger-ui/swagger.yaml

[codecov]

Codecov Report

Merging #1139 (f6c0de1) into rc/v0.48.0-rcx (8920362) will increase coverage by 0.00%.
The diff coverage is 100.00%.

Additional details and impacted files

@@               Coverage Diff               @@
##           rc/v0.48.0-rcx    #1139   +/-   ##
===============================================
  Coverage           69.77%   69.78%           
===============================================
  Files                 645      646    +1     
  Lines               67482    67489    +7     
===============================================
+ Hits                47086    47094    +8     
+ Misses              18210    18209    -1     
  Partials             2186     2186           

Files	Coverage Δ
testutil/encoding.go	100.00% <100.00%> (ø)

... and 1 file with indirect coverage changes