Re-enable codewithme plugin and update Gateway API TODO for 2025.3

- Re-enabled com.jetbrains.codeWithMe plugin for 2025.3 (now available)
- Updated CodeCatalystGatewayClientCustomizer TODO to clarify Gateway APIs have changed, not unavailable
- Addresses PR reviewer feedback

Author: aseemxs

buildSrc/src/main/kotlin/software/aws/toolkits/gradle/intellij/IdeVersions.kt

@@ -168,7 +168,7 @@ object IdeVersions {
                     "com.intellij.properties"
                 ),
                 marketplacePlugins = listOf(
-                    // "com.jetbrains.codeWithMe", // TODO: add back when available in 2025.3
+                    "com.jetbrains.codeWithMe",
                     "org.toml.lang:253.25908.29",
                     "PythonCore:253.25908.13",
                     "Docker:253.25908.29",
@@ -183,7 +183,7 @@ object IdeVersions {
                     "com.intellij.database"
                 ),
                 marketplacePlugins = listOf(
-                    // "com.jetbrains.codeWithMe", // TODO: add back when available in 2025.3
+                    "com.jetbrains.codeWithMe",
                     "Pythonid:253.25908.13",
                     "org.jetbrains.plugins.go:253.25908.13",
                     "com.intellij.modules.json:253.25908.13"

plugins/toolkit/jetbrains-ultimate/src/software/aws/toolkits/jetbrains/remoteDev/caws/CodeCatalystGatewayClientCustomizer.kt

@@ -3,11 +3,16 @@
 
 package software.aws.toolkits.jetbrains.remoteDev.caws
 
-// TODO: Re-enable when Gateway APIs are available in 2025.3
-// import com.intellij.gateway.GatewayClientCustomizationProvider
-
-// TODO: Re-enable when Gateway APIs are available in 2025.3 - Gateway APIs moved
+// TODO: Update to use new Gateway APIs in 2025.3
+// GatewayClientCustomizationProvider interface has changed or moved in 2025.3
+// Need to investigate the new API structure in com.jetbrains.rdserver.unattendedHost.customization
 /*
+import com.intellij.openapi.extensions.ExtensionNotApplicableException
+import com.jetbrains.rdserver.unattendedHost.customization.controlCenter.GatewayClientCustomizationProvider
+import icons.AwsIcons
+import software.aws.toolkits.jetbrains.utils.isCodeCatalystDevEnv
+import software.aws.toolkits.resources.message
+
 class CodeCatalystGatewayClientCustomizer : GatewayClientCustomizationProvider {
     init {
         if (!isCodeCatalystDevEnv()) {