docs: fix react sample startup guide & add needful dependency …

[AlienegraGeek]

Description

Refined the guidance for example and added a required dependency that otherwise would have prevented the sample service from starting due to dependency and build issues.

Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings

Type of change.

• FIX - a PR of this type patches a bug.
• FEATURE - a PR of this type introduces a new feature.
• BUILD - a PR of this type introduces build changes.
• CI - a PR of this type introduces CI changes.
• DOCS - a PR of this type introduces DOCS improvement.
• STYLE - a PR of this type introduces style changes.
• REFACTOR - a PR of this type introduces refactoring.
• PERFORMANCE - a PR of this type introduces performance changes.
• TEST - a PR of this type adds more tests.
• CHORE - a PR introduces other changes than the specified above.

[trechriron]

Please change the initial branch merge to DEV. Thanks!

[AlienegraGeek]

Please change the initial branch merge to DEV. Thanks!

Done.

[pivanov]

nice :)
r+

The merge-base changed after approval.

[frol]

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[AlienegraGeek]

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[pivanov]

r+

The merge-base changed after approval.

[race-of-sloths]

❌ PR inactive

This PR has been inactive for two weeks. It's now marked as stale.

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The merge-base changed after approval.

[trechriron]

LGTM

The merge-base changed after approval.

The merge-base changed after approval.

The merge-base changed after approval.