Sync too many retries

- When an one-shot sync with app-standby exempt fails too many times in a row,
drop the "exempt from app-standby" flag.

- Also obtain some constants from global settings so we can change them
in CTS.

Bug: 72443754
Test: Manual test (CTS WIP)

Change-Id: Ibdbb348a7ff26a0be04b8f2c256e1f6ead39907d
diff --git a/core/tests/coretests/src/android/provider/SettingsBackupTest.java b/core/tests/coretests/src/android/provider/SettingsBackupTest.java
index 5bb9abe..a0b6297 100644
--- a/core/tests/coretests/src/android/provider/SettingsBackupTest.java
+++ b/core/tests/coretests/src/android/provider/SettingsBackupTest.java
@@ -366,6 +366,7 @@
                     Settings.Global.SQLITE_COMPATIBILITY_WAL_FLAGS,
                     Settings.Global.STORAGE_BENCHMARK_INTERVAL,
                     Settings.Global.STORAGE_SETTINGS_CLOBBER_THRESHOLD,
+                    Settings.Global.SYNC_MANAGER_CONSTANTS,
                     Settings.Global.SYNC_MAX_RETRY_DELAY_IN_SECONDS,
                     Settings.Global.SYS_FREE_STORAGE_LOG_INTERVAL,
                     Settings.Global.SYS_STORAGE_CACHE_MAX_BYTES,