Remove unnecessary InputStream.close call (#1982)

#1942 changed the way that the bootstrap init script is handled, but it added an extra `InputStream.close` call that shouldn't be needed after the BufferedReader [here](https://github.com/apache/polaris/pull/1942/files#diff-de43b240b5b5e07aba7e89f5515a417cefd908845b85432f3fcc0819911f3e2eR89) is closed. This PR removes that extra call.

Author: eric-maynard

persistence/relational-jdbc/src/main/java/org/apache/polaris/persistence/relational/jdbc/DatasourceOperations.java

@@ -82,16 +82,15 @@ DatabaseType getDatabaseType() {
    * @throws SQLException : Exception while executing the script.
    */
   public void executeScript(InputStream scriptInputStream) throws SQLException {
-    try {
+    try (BufferedReader scriptReader =
+        new BufferedReader(
+            new InputStreamReader(Objects.requireNonNull(scriptInputStream), UTF_8))) {
+      List<String> scriptLines = scriptReader.lines().toList();
       runWithinTransaction(
           connection -> {
-            try (Statement statement = connection.createStatement();
-                BufferedReader reader =
-                    new BufferedReader(
-                        new InputStreamReader(Objects.requireNonNull(scriptInputStream), UTF_8))) {
+            try (Statement statement = connection.createStatement()) {
               StringBuilder sqlBuffer = new StringBuilder();
-              String line;
-              while ((line = reader.readLine()) != null) {
+              for (String line : scriptLines) {
                 line = line.trim();
                 if (!line.isEmpty() && !line.startsWith("--")) { // Ignore empty lines and comments
                   sqlBuffer.append(line).append("\n");
@@ -110,16 +109,10 @@ public void executeScript(InputStream scriptInputStream) throws SQLException {
                 }
               }
               return true;
-            } catch (IOException e) {
-              throw new RuntimeException(e);
             }
           });
-    } finally {
-      try {
-        scriptInputStream.close();
-      } catch (IOException e) {
-        LOGGER.error("Failed to close input stream: {}", e.getMessage());
-      }
+    } catch (IOException e) {
+      throw new RuntimeException(e);
     }
   }