fix: ignore mouse events when modal is opened

[dundee]

fixes #203

[coveralls]

Pull Request Test Coverage Report for Build 4083025909

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 7 of 7 (100.0%) changed or added relevant lines in 1 file are covered.
• 5 unchanged lines in 1 file lost coverage.
• Overall coverage increased (+0.8%) to 96.331%

---

Files with Coverage Reduction	New Missed Lines	%
report/export.go	5	92.02%

Totals
Change from base Build 4000790132:	0.8%
Covered Lines:	2442
Relevant Lines:	2535

---

💛 - Coveralls

[codecov]

Codecov Report

Base: 94.18% // Head: 93.94% // Decreases project coverage by -0.25% ⚠️

Coverage data is based on head (4341b59) compared to base (10c8ae1).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #205      +/-   ##
==========================================
- Coverage   94.18%   93.94%   -0.25%     
==========================================
  Files          29       29              
  Lines        2700     2707       +7     
==========================================
  Hits         2543     2543              
- Misses        120      125       +5     
- Partials       37       39       +2     

Impacted Files	Coverage Δ
tui/mouse.go	100.00% <100.00%> (ø)
report/export.go	88.12% <0.00%> (-4.38%)	⬇️

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