fix: "Cannot commit, no transaction is active" error in sql.js (#9234)

* fix: fix "Cannot commit, no transaction is active" error in sql.js

Closes: #9100

* Flush database only if transaction is done

Co-authored-by: Brice Miclo <brice.miclo@socomec.com>

src/driver/sqljs/SqljsDriver.ts

@@ -199,9 +199,10 @@ export class SqljsDriver extends AbstractSqliteDriver {
      * If a custom autoSaveCallback is specified, it get's called with the database as Uint8Array,
      * otherwise the save method is called which saves it to file (Node.js), local storage (browser)
      * or indexedDB (browser with enabled useLocalForage option).
+     * Don't auto-save when in transaction as the call to export will end the current transaction
      */
     async autoSave() {
-        if (this.options.autoSave) {
+        if (this.options.autoSave && !this.queryRunner?.isTransactionActive) {
             if (this.options.autoSaveCallback) {
                 await this.options.autoSaveCallback(this.export())
             } else {

src/driver/sqljs/SqljsQueryRunner.ts

@@ -66,7 +66,9 @@ export class SqljsQueryRunner extends AbstractSqliteQueryRunner {
      */
     async commitTransaction(): Promise<void> {
         await super.commitTransaction()
-        await this.flush()
+        if (!this.isTransactionActive) {
+            await this.flush()
+        }
     }
 
     /**