Fix: add accessibility labels for form fields and icons @W-14337430@

[joeluong-sfcc]

Description

This PR adds accessibility labels for certain form fields and icons as part of an internal accessibility audit. This PR tackles multiple accessibility issues that are tracked using the table below.

Accessibility Bug Tracking Table

Work Item	Description	Files Editted
W-12627140	Cart icon in nav header doesn't provide number of items in aria label	packages/template-retail-react-app/app/components/header/index.jsx
W-12627099	Quantity Input requires aria label	packages/template-retail-react-app/app/components/quantity-picker/index.jsx
W-12627098	Info tooltip for 'Shipping (Promotion Applied)' requires aria label	packages/template-retail-react-app/app/components/promo-popover/index.jsx
W-12627094	Color swatch filters on PLP do not have accessible name - text is separated from the color swatch element itself	packages/template-retail-react-app/app/pages/product-list/partials/color-refinements.jsx
W-12627093	PLP sort by drop down select does not have valid label	packages/template-retail-react-app/app/pages/product-list/index.jsx
W-12627109	Certain images (icons) don't have meaningful text associated with it - paypal/credit card/lock icons - duplicate of W-12627100	packages/template-retail-react-app/app/components/icons/index.jsx
W-12627172	Lock icon on 'Proceed to checkout' button on add to cart modal does not have meaningful text associated with it	packages/template-retail-react-app/app/components/icons/index.jsx
W-12627100	Certain svgs (icons) don't have meaningful text associated with it - paypal/credit card/lock icons - duplicate of W-12627109	packages/template-retail-react-app/app/components/icons/index.jsx

Types of Changes

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Documentation update
• Breaking change (could cause existing functionality to not work as expected)
• Other changes (non-breaking changes that does not fit any of the above)

Breaking changes include:

• Removing a public function or component or prop
• Adding a required argument to a function
• Changing the data type of a function parameter or return value
• Adding a new peer dependency to package.json

Changes

• (change1)

How to Test-Drive This PR

• (step1)

Checklists

General

• Changes are covered by test cases
• CHANGELOG.md updated with a short description of changes (not required for documentation updates)

Accessibility Compliance

You must check off all items in one of the follow two lists:

• There are no changes to UI

or...

• Changes were tested with a Screen Reader (iOS VoiceOver or Android Talkback) and had no issues
• Changes comply with WCAG 2.0 guidelines levels A and AA
• Changes to common UI patterns and interactions comply with WAI-ARIA best practices

Localization

• Changes include a UI text update in the Retail React App (which requires translation)

[wjhsf]

Just the one missed message, otherwise 👍