refactor: button to toggle parent doc cost center preference for rounding adjustment amount

[ruthra-kumar]

While using Cost Center Allocation(CCA), there are scenarios where user might face below error.

This happens when Rounding adjustment gets split to smaller allocation. Say a rounding amount of 0.01 (which is very common) gets split into 95% and 5% cost center allocation and the system is configured for 2 digit floating point precision. In Such cases, after splitting the round off amount, the 5% alllocation becomes zero (0.01 * 0.05 = 0.0005) due to rounding effect. This causes validation error in General Ledger.

Adding a checkbox to toggle auto fetching Parent Document cost center for Rounding off entries. If unchecked, default round off cost center from Company master will be used.

If the default cost center in company master also has such kind of CCA, for some reason, then disabling the CCA is the only option.

[codecov]

Codecov Report

Merging #35091 (4ccce93) into develop (04902e1) will decrease coverage by 0.01%.
The diff coverage is 100.00%.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop   #35091      +/-   ##
===========================================
- Coverage    63.69%   63.69%   -0.01%     
===========================================
  Files          813      813              
  Lines        60007    60019      +12     
===========================================
+ Hits         38221    38228       +7     
- Misses       21786    21791       +5     

Impacted Files	Coverage Δ
...ounts/doctype/purchase_invoice/purchase_invoice.py	84.11% <ø> (ø)
...xt/accounts/doctype/sales_invoice/sales_invoice.py	82.14% <ø> (ø)
erpnext/accounts/general_ledger.py	94.24% <100.00%> (ø)

... and 15 files with indirect coverage changes