Fixed blank document state restore issue

Author: pratikksahu

JetPDFVue/src/main/java/com/pratikk/jetpdfvue/state/HorizontalVueReaderState.kt

@@ -63,7 +63,7 @@ class HorizontalVueReaderState(
                 it.importJob?.cancel()
                 val resource =
                     it.file?.let { file ->
-                        if (it.vueResource is VueResourceType.BlankDocument)
+                        if (it.vueResource is VueResourceType.BlankDocument && !it.isDocumentModified)
                             VueResourceType.BlankDocument(file.toUri())
                         else
                             VueResourceType.Local(

JetPDFVue/src/main/java/com/pratikk/jetpdfvue/state/VerticalVueReaderState.kt

@@ -65,7 +65,7 @@ class VerticalVueReaderState(
                 it.importJob?.cancel()
                 val resource =
                         it.file?.let { file ->
-                            if (it.vueResource is VueResourceType.BlankDocument)
+                            if (it.vueResource is VueResourceType.BlankDocument && !it.isDocumentModified)
                                 VueResourceType.BlankDocument(file.toUri())
                             else
                                 VueResourceType.Local(