fix(input): debounce is set with binding syntax in angular on load - #29377

Issue number: resolves #29374

What is the current behavior?

When using Angular binding syntax, the debounce value can be set after connectedCallback, but before componentDidLoad. This results in the internal representation of the debounce value to be the default and the watch callback to never fire.

What is the new behavior?

• The callback handler for debounce is called on component load, identical to what we do for the same exact reasons for the input type.
• debounce will correctly reflect and apply the developers value when using binding syntax on initial load

Does this introduce a breaking change?

• Yes
• No

Other information

Dev-build: 8.0.1-dev.11713879639.102f51a0

Forked reproduction with the dev-build is available here: #29374 (comment)