Enable formatting with join_lines_based_on_source=false

[avik-pal]

Now that the bad formatting with this option has been fixed, disabling this makes the code look prettier.

[codecov]

Codecov Report

Attention: 18 lines in your changes are missing coverage. Please review.

Comparison is base (c50c21a) 88.30% compared to head (c7e10db) 88.30%.

Files	Patch %	Lines
src/algorithms/extension_algs.jl	62.50%	3 Missing ⚠️
src/core/approximate_jacobian.jl	82.35%	3 Missing ⚠️
src/default.jl	84.21%	3 Missing ⚠️
ext/NonlinearSolveSIAMFANLEquationsExt.jl	81.81%	2 Missing ⚠️
src/descent/steepest.jl	33.33%	2 Missing ⚠️
src/internal/forward_diff.jl	50.00%	2 Missing ⚠️
src/core/generic.jl	80.00%	1 Missing ⚠️
src/internal/helpers.jl	90.00%	1 Missing ⚠️
src/internal/tracing.jl	90.90%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #380   +/-   ##
=======================================
  Coverage   88.30%   88.30%           
=======================================
  Files          44       44           
  Lines        2625     2626    +1     
=======================================
+ Hits         2318     2319    +1     
  Misses        307      307           

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