Support New displayOnly Confg Option

[spencersablan]

Description

This PR uses the new displayOnly config option in the button eligibility logic.

paypal.Buttons({
    displayOnly: ["vaultable"]
})

Why are we making these changes? Include references to any related Jira tasks or GitHub Issues

Jira: https://paypal.atlassian.net/browse/DTPPCPSDK-825

Reproduction Steps (if applicable)

Screenshots (if applicable)

Dependent Changes (if applicable)

Groups who should review (if applicable)

❤️ Thank you!

[spencersablan]

Lint is failing because it doesn't have the new constant I added to paypal-sdk-constants.

[wsbrunson]

We should get a unit test up for src/funding/funding.js

[wsbrunson]

looking swell sir!

[codecov]

Codecov Report

Attention: 13 lines in your changes are missing coverage. Please review.

Comparison is base (c27574e) 51.22% compared to head (1624c81) 51.01%.
Report is 4 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2252      +/-   ##
==========================================
- Coverage   51.22%   51.01%   -0.21%     
==========================================
  Files         104      104              
  Lines        2007     2025      +18     
  Branches      587      599      +12     
==========================================
+ Hits         1028     1033       +5     
- Misses        879      889      +10     
- Partials      100      103       +3     

Flag	Coverage Δ
jest	31.99% <23.52%> (-0.10%)	⬇️
karma	49.66% <27.27%> (-0.16%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
src/ui/buttons/buttons.jsx	76.71% <ø> (ø)
src/ui/buttons/props.js	78.49% <100.00%> (+0.23%)	⬆️
src/zoid/buttons/component.jsx	81.25% <100.00%> (+0.19%)	⬆️
src/funding/funding.js	67.12% <18.75%> (-13.58%)	⬇️

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