Add Missing Field Modal For Won status

[Siddhantsingh1230]

Description

Previously, setting an opportunity to Won showed a toast if required project fields were missing, with no way to fill them. This PR adds a modal to collect all required fields upfront, improving the user experience.

Relevant Technical Choices

• Add Missing Field Modal to show all fields

Testing Instructions

• Open an opportunity on next_crm.
• Update status to Won.
• It should open up a Modal (if Project specific values are empty)

Additional Information:

• N/A

Screenshot/Screencast

Missing.Field.Modal.webm

Checklist

• I have carefully reviewed the code before submitting it for review.
• This code is adequately covered by unit tests to validate its functionality.
• I have conducted thorough testing to ensure it functions as intended.
• A member of the QA team has reviewed and tested this PR (To be checked by QA or code reviewer)

Addresses https://github.com/rtCamp/erp-rtcamp/issues/2155#issuecomment-2883071739

[Aryan20]

@Siddhantsingh1230, can we ensure that this pop-up only opens if PMS is installed? Otherwise, a pop-up is not needed.

[Siddhantsingh1230]

can we ensure that this pop-up only opens if PMS is installed? Otherwise, a pop-up is not needed.

Can we add a checkbox field to the Opportunity Doctype via the rtcamp app, labeled "Create Project from Opportunity" (with the description: "Automatically create a project when the opportunity is marked as won")? This field should default to true and will be used in the frontend to trigger the "Missing Fields" modal flow. Implementing this should satisfy our use case and eliminate the dependency of any external apps on NCRM.

cc: @KanchanChauhan / @niraj2477