#862 Fix flaky loadtxt test for int32 by adding sleep after savetxt. .

[punithk-verse]

Added sleep calls to test_loadtxt.f90 to introduce delays between file operations. because before file was being read even before it was writeen and closed

Fixes #862

This PR addresses the intermittent failure of the loadtxt test for int32,
which occasionally produced:

• Fortran runtime error: Bad value during floating point read
  End-of-file during read

Root cause:
The test wrote data to 'test_int32.txt' and immediately attempted to read
it with loadtxt.
Fix:
After every call to savetxt, a short delay has been added:
call sleep(1)
This ensures the file is fully written and stable before loadtxt reads it.
This is a beginner-friendly first fix; maintainers may later improve it
using proper file flushing.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 25.13%. Comparing base (fffe0d7) to head (475ea9f).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1057      +/-   ##
==========================================
+ Coverage   25.12%   25.13%   +0.01%     
==========================================
  Files         570      570              
  Lines      234201   234201              
  Branches    41277    41276       -1     
==========================================
+ Hits        58838    58871      +33     
+ Misses     175363   175330      -33     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.