chore: normalize line endings (CRLF -> LF)

No content changes: git diff --ignore-all-space over these files is empty.
The churn came from editing on Windows against a repo checked out with LF.

linux/flutter/generated_plugin_registrant.cc

@@ -1,19 +1,19 @@
-//
-//  Generated file. Do not edit.
-//
-
-// clang-format off
-
-#include "generated_plugin_registrant.h"
-
-#include <file_selector_linux/file_selector_plugin.h>
-#include <printing/printing_plugin.h>
-
-void fl_register_plugins(FlPluginRegistry* registry) {
-  g_autoptr(FlPluginRegistrar) file_selector_linux_registrar =
-      fl_plugin_registry_get_registrar_for_plugin(registry, "FileSelectorPlugin");
-  file_selector_plugin_register_with_registrar(file_selector_linux_registrar);
-  g_autoptr(FlPluginRegistrar) printing_registrar =
-      fl_plugin_registry_get_registrar_for_plugin(registry, "PrintingPlugin");
-  printing_plugin_register_with_registrar(printing_registrar);
-}
+//
+//  Generated file. Do not edit.
+//
+
+// clang-format off
+
+#include "generated_plugin_registrant.h"
+
+#include <file_selector_linux/file_selector_plugin.h>
+#include <printing/printing_plugin.h>
+
+void fl_register_plugins(FlPluginRegistry* registry) {
+  g_autoptr(FlPluginRegistrar) file_selector_linux_registrar =
+      fl_plugin_registry_get_registrar_for_plugin(registry, "FileSelectorPlugin");
+  file_selector_plugin_register_with_registrar(file_selector_linux_registrar);
+  g_autoptr(FlPluginRegistrar) printing_registrar =
+      fl_plugin_registry_get_registrar_for_plugin(registry, "PrintingPlugin");
+  printing_plugin_register_with_registrar(printing_registrar);
+}