[ObjectPage]: [a11y]Heading levels should only increase by one, and Heading hierarchy is not correctly defined on the page

[VidhiNPatel]

Describe the bug

Incorrect Heading Levels in Different Scenarios
When Tabstrip Is Present for Multiple Sections Navigation:

1. The first section tab is missing a heading level.
2. If a form is configured inside a subsection, its title is assigned an H6 heading, skipping the H5 heading.

When Tabstrip Is NOT Present:

1. The subsection title is assigned an H4 heading, skipping the H3 heading level.
2. If a form is configured inside a subsection, its title is assigned an H6 heading, skipping the H5 heading.

Isolated Example

No response

Reproduction steps

1.Go to https://sap.github.io/ui5-webcomponents-react/v2/?path=/story/layouts-floorplans-objectpage--default
2. Turn on screen reader
3. Focus to Object status
4. Check the announcement

Expected Behaviour

Heading levels should only increase by one
Ensure the order of headings is semantically correct.

Screenshots or Videos

UI5 Web Components for React Version

2.7.2

UI5 Web Components Version

2.7.3

Browser

Chrome

Operating System

No response

Additional Context

No response

Relevant log output

Organization

Successfactors

Declaration

• I’m not disclosing any internal or sensitive information.