Fix UiccSlotInfo equals method.

In UiccSlotInfo#equals method, it's comparing Strings incorrectly.

Bug: 78033760
Test: GTS test
Change-Id: I4fed0a70ee0ef06bcf7a1af544e6aebced31d9c2
diff --git a/telephony/java/android/telephony/UiccSlotInfo.java b/telephony/java/android/telephony/UiccSlotInfo.java
index 125161d..a39992b 100644
--- a/telephony/java/android/telephony/UiccSlotInfo.java
+++ b/telephony/java/android/telephony/UiccSlotInfo.java
@@ -148,7 +148,7 @@
         UiccSlotInfo that = (UiccSlotInfo) obj;
         return (mIsActive == that.mIsActive)
                 && (mIsEuicc == that.mIsEuicc)
-                && (mCardId == that.mCardId)
+                && (Objects.equals(mCardId, that.mCardId))
                 && (mCardStateInfo == that.mCardStateInfo)
                 && (mLogicalSlotIdx == that.mLogicalSlotIdx)
                 && (mIsExtendedApduSupported == that.mIsExtendedApduSupported);