ObjectHeader doesn't support `.accessibilityElement(children: .combine)` modifier

[dzmitry-antonenka-sap]

Describe the bug
When add .accessibilityElement(children: .combine) modifier VoiceOver doesn't pronounce grouped children elements, only visually selects them.

To Reproduce
For Examples.xcodeproj replace content of the ContentView.swift with following code:
`
import FioriCharts
import SwiftUI
import FioriCharts
import FioriSwiftUICore
import FioriCharts
import FioriSwiftUICore
import SwiftUI

struct ContentView: View {
var body: some View {
ObjectHeader {
Text("Some title text explaining something")
.font(.fiori(forTextStyle: .title3))
.foregroundColor(.preferredColor(.primaryLabel))
.fontWeight(.black)
} subtitle: {
Text("Some author name")
.font(.fiori(forTextStyle: .body))
.foregroundColor(.preferredColor(.secondaryLabel))
.fontWeight(.regular)
} footnote: {
Text("2 days ago")
.font(.fiori(forTextStyle: .subheadline))
.foregroundColor(.preferredColor(.tertiaryLabel))
.fontWeight(.regular)
}
.padding()
.accessibilityElement(children: .combine)
}
}
`

1. Enable Accessibility -> Voice Over
2. Launch the app
3. Observe that header children text is not pronounced when .accessibilityElement(children: .combine) added, only visual grouping is visible.
   Note: when no .accessibilityElement(children: .combine) added elements pronounced separately, but I need .accessibilityElement(children: .combine) so they are grouped.

Expected behavior
Expected all grouped elements are pronounced by VoiceOver with this modifier.

Screenshots

Mobile (please complete the following information):

Device: iPhone 8
OS: iOS 15.5
Swift Package Product: FioriSwiftUICore
Swift Package Version: 2.1.0, main branch, commit a82de93
Xcode Version: Version 13.4 (13F17a), toolchain Xcode Version 13.4 (13F17a)
FioriSwiftUI / cloud-sdk-ios-fiori 2.1.0

Additional context
Add any other context about the problem here.

[billzhou0223]

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