feat(client): support HTML tags in heading and lead props

[hxtree]

• Modify Hero component to use dangerouslySetInnerHTML for heading and lead props
• Ensure HTML content is sanitized to prevent XSS attacks

[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
✅ +0.05%	✅ ∅

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (bbb9cfa)	2138	1574	73.62%
Head commit (c528368)	2138 (+0)	1575 (+1)	73.67% (+0.05%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#840)	0	0	∅ (not applicable)

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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