Refactored `ReportViewer.razor` to improve maintainability and
ensure dynamic updates to the `DxReportViewer` component.
- Added `@key` attribute bound to `ViewerKey` to trigger re-renders.
- Introduced `CreateReportInstance` and `CreateSignedReportInstance`
helper methods to encapsulate report creation logic.
- Updated `OnInitializedAsync`, `ClearSignatureAsync`, and
`ApplySignatureAsync` to use the new helper methods.
- Incremented `ViewerKey` in relevant methods to ensure proper
re-rendering of the `DxReportViewer` component.
- Replaced `ApplySignatureToReport` with `CreateSignedReportInstance`.
These changes improve code modularity, readability, and ensure
the UI reflects the latest state of the report.
TekH
367850fee5