LPD-30904 Remove uses of shadow-none on links and buttons for keyboar…

[liferay-continuous-integration]

Forwarded from: https://github.com/liferay-platform-experience/liferay-portal/pull/662 (Took 1 ci:forward attempt in 42 seconds) Console

@pat270 @liferay-platform-experience

Original pull request comment: …d accessibility

https://liferay.atlassian.net/browse/LPD-30904

This pr doesn't remove shadow-none from:

liferay-portal/modules/apps/site-initializer/site-initializer-raylife-ap/extra/remote-app/src/routes/claims/pages/ClaimsTable/index.tsx

liferay-portal/modules/apps/site-initializer/site-initializer-raylife-ap/extra/remote-app/src/routes/policies/pages/PoliciesTable/index.tsx

liferay-portal/modules/apps/site-initializer/site-initializer-raylife-d2c/extra/remote-app/src/routes/get-a-quote/components/tip-container-modal/index.js

We should have the team that owns it make the changes. There might be more theme changes needed.