Dp/ccdm/bodysize annotation

[ptdatkhtn]

• allow using @BodySize annotation in AppShell class
• add some test case to check style element that contains body style exist
• add test case to use dynamic content for @BodySize annotation
  fixes support @BodySize annotation on an AppShell class #7178

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This change is 

[claassistantio]

All committers have signed the CLA.

[claassistantio]

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[manolo]

Reviewable status: 1 unresolved discussion, 0 of 1 LGTMs obtained (waiting on @ptdatkhtn)

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flow-server/src/main/java/com/vaadin/flow/server/startup/VaadinAppShellRegistry.java, line 176 at r2 (raw file):

     * Modifies the `index.html` document based on the {@link VaadinAppShell}
     * annotations.
     *g

remove

[ptdatkhtn]

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flow-server/src/main/java/com/vaadin/flow/server/startup/VaadinAppShellRegistry.java, line 176 at r2 (raw file):

Previously, manolo (Manuel Carrasco Moñino) wrote…

remove

Done.

[platosha]

Reviewed 7 of 7 files at r3.
Reviewable status: 1 unresolved discussion, 1 of 1 LGTMs obtained (waiting on @manolo)

[manolo]

Reviewable status: complete! all discussions resolved, 2 of 1 LGTMs obtained