fix(AInView): include 0 and 1 as valid threshold values

[brennarvo]

Please check if the PR fulfills these requirements

• [ ] The commit message follows semantic commit message guidelines
• [ ] The changes are documented in component docs and changelog
• [ ] The ESLint plugin has been updated if a new component is added
• [ ] Test have been added or modified, if appropriate
• [ ] Has been verified locally

What kind of change does this PR introduce?

Fixes an issue where the console would warn if 0 or 1 were passed to the AInView component.

What is the current behavior?

The utility to validate an intersection observer threshold is not including 0 or 1 in its valid values.

What is the new behavior (if this is a feature change)?

Update the utility function to return 0 and 1 as valid threshold values.

Does this PR introduce a breaking change?

No

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[codecov[bot]]

Codecov Report

Merging #1193 (ad9c4ec) into master (d3ecaba) will not change coverage. The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master    #1193   +/-   ##
=======================================
  Coverage   90.47%   90.47%           
=======================================
  Files          98       98           
  Lines        3056     3056           
  Branches     1045     1045           
=======================================
  Hits         2765     2765           
  Misses        250      250           
  Partials       41       41           

Impacted Files	Coverage Δ
framework/utils/hooks.js	86.36% <100.00%> (ø)

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