Replace table during import

[davidfig]

Relevant issue(s)

Closes #3371

• UI for replacing a table
• replace table when overwriting

[qa-wolf]

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[github-actions]

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[codecov]

Codecov Report

❌ Patch coverage is 47.50000% with 21 lines in your changes missing coverage. Please review.
✅ Project coverage is 89.74%. Comparing base (bf9610c) to head (7dc5e4e).

Files with missing lines	Patch %	Lines
quadratic-core/src/controller/operations/import.rs	28.57%	20 Missing ⚠️
...adratic-core/src/controller/user_actions/import.rs	91.66%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##               qa    #3483      +/-   ##
==========================================
- Coverage   89.76%   89.74%   -0.02%     
==========================================
  Files         437      437              
  Lines       90129    90167      +38     
==========================================
+ Hits        80905    80922      +17     
- Misses       9224     9245      +21     

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