fix: Company Wise Valuation Rate for RM in BOM

[marination]

Issue:

• When Rate Of Materials Based On is selected as Valuation Rate in BOM, it picks the weighted average valuation rate for a particular raw material entered.
• This valuation rate was calculated from among all Bins, irrespective of the company, which was incorrect.
• Here the first four rows are Bins that belong to company A. The last belongs to company B.
  
• The weighted average valuation rate here will be calculated as such: (sum of stock values) / (sum of actual qty)
• Since company wasn't considered the valuation picked would be 14500 (sum of ALL stock values) / 144 = 100.69
  

Fix:

• Pass company as a criteria while filtering Bins to calculate valuation rate from in a BOM.
• For company A, the valuation rate must be 100 (14300 / 143 = 100)
• For company B, the valuation rate must be 200 (200 / 1 = 200)
  

[marination]

For the reviewer: Should it also be warehouse specific if a source warehouse is mentioned in BOM ?