refactor(app): simplify annotation creation and improve signature handling

- Updated `createImageAnnotation` to use pre-generated id instead of multiple parameters
- Replaced hardcoded annotation ID generation during signature creation
- Added `fixBase64` helper to handle escaped base64 strings
- Temporarily added logging in `handleFinish` for debugging exported InstantJSON
- Simplified `createImageAnnotation` signature and usage
- Improved readability and consistency in annotation ID generation logic

EnvelopeGenerator.Web/wwwroot/js/app.js

@@ -88,16 +88,25 @@ class App {
                 }),
                 annotation.pageIndex,
                 imageAttachmentId,
-                this.envelopeReceiver.envelopeId,
-                this.envelopeReceiver.receiverId,
-                this.fakeElementId--,
-                'signature'
+                generateId(
+                    this.envelopeReceiver.envelopeId,
+                    this.envelopeReceiver.receiverId,
+                    this.fakeElementId--,
+                    'signed'
+                )
             )
 
             this.pdfKit.create(frameAnnotation)
         }
     }
 
+    fixBase64(escapedBase64) {
+        return escapedBase64
+            .replace(/\\u002B/g, "+")
+            .replace(/\\u002F/g, "/")
+            .replace(/\\u003D/g, "=");
+    }
+
     async handleClick(eventType) {
         let result = false
 
@@ -181,6 +190,10 @@ class App {
 
     async handleFinish(event) {
         const iJSON = await this.pdfKit.exportInstantJSON()
+
+        console.log(iJSON);
+
+        return
         const iFormFieldValues = await iJSON.formFieldValues;
 
         //check required