fix(components/lookup): rename harness filters textContent property to text to satisfy conventions

[Blackbaud-SteveBrush]

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[nx-cloud]

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✅ Successfully ran 10 targets

• nx affected --target=build --parallel --maxParallel=5
• nx affected --target=posttest --parallel --maxParallel=5 --browsers=ChromeHeadless
• nx affected --target=test --parallel --maxParallel=5 --browsers=ChromeHeadless
• nx affected:lint --quiet --silent --parallel --maxParallel=5
• nx build code-examples --baseHref=https://blackbaud.github.io/skyux-pr-preview/526/code-examples/
• nx build i18n
• nx build integration --baseHref=https://blackbaud.github.io/skyux-pr-preview/526/integration/
• nx build playground --baseHref=https://blackbaud.github.io/skyux-pr-preview/526/playground/
• nx run i18n:postbuild
• nx run storybook:build-storybook:ci --outputDir=dist/storybook

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[blackbaud-sky-build-user]

Storybook preview

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Apps:

• code-examples
• integration
• playground