MPDX-9305 Add single/married cap logic to ASR

[kegrimes]

Description

There are different submit modals that should show based on individual cap and, if married, spouse cap. We already have an single user's exceeding cap logic, so we need to add a married user's logic to the front end. Also, we need to account for a married couple staying under their combined cap.

Note: $5,000 is the hardcoded individual cap which will be reverted once this PR is tested and ready for production!

Testing

Testing for Single && under cap:

• Go to /reports/additionalSalaryRequest
• Enter in an input under $5000
• Check that correct modal appears

Testing for Single && exceeding cap:

• Enter in an input over $5000
• Ensure accordions appear
• Check that correct modal appears

Before testing Married couple, you need to hard code a few things: individual cap ($5000) and total ($4000)

// useSalaryCalculations.ts --> change spouseExceedsCap and underCombinedCap
const spouseExceedsCap = 4000 > 5000;
const underCombinedCap = true;

Testing for Married && exceeding cap && spouse under cap && under combined cap:

• Ensure accordions are present
• Check that correct modal appears
• Note: Spouse's name will not appear because of the testing account

Testing for Married && exceeding cap && spouse over cap OR Married && exceeding cap && spouse under cap && over combined cap:

• Replace 4000 with 6000 in spouseExceedsCap
• Ensure accordions are present
• Check that correct modal appears
• THEN, replace 6000 with 4000 (spouseExceedsCap) and replace true with false (underCombinedCap)

Checklist:

• I have given my PR a title with the format "MPDX-(JIRA#) (summary sentence max 80 chars)"
• I have applied the appropriate labels (Add the label "Preview" to automatically create a preview environment)
• I have run the Claude Code /pr-review command locally and fixed any relevant suggestions
• I have requested a review from another person on the project
• I have tested my changes in preview or in staging
• I have cleaned up my commit history

[github-actions]

Preview branch generated at https://mpdx-9305-asr-combined-cap-logic.d3dytjb8adxkk5.amplifyapp.com

[github-actions]

Bundle sizes [mpdx-react]

Compared against f0f1086

No significant changes found

[kegrimes]

@wjames111 @canac I tried to get this PR done as quickly as possible, so I had Claude write some of the tests for me (sorry if they are messy)! Let me know if these calculations and logic are correct. I think this is what Will and I settled on, but not 100% confident. All the scenarios listed above should be working though. I did hardcode some values and you will have to change them based on the difference situations (listed above).