fix(android): consult overridable auto-upload closure at config time

Addresses review feedback: capturing `SENTRY_DISABLE_AUTO_UPLOAD` via
`System.getenv` at apply-time ignored a `project.ext.shouldSentryAutoUploadGeneral`
override set right after `apply from` (e.g. the Expo `disableAutoUpload` config
plugin, which injects `project.ext.shouldSentryAutoUploadGeneral = { -> return false }`).
Uploads would then run even when the user disabled them.

Now capture `shouldSentryAutoUploadGeneral()` inside the `onVariants` callback,
which runs after the app `build.gradle` has evaluated, so the override is in
effect. Likewise capture `shouldCopySentryOptionsFile()` via the closure rather
than re-reading the env var, so `project.ext` overrides of it keep working.

Both `onlyIf` specs still reference a captured boolean, so the tasks remain
Configuration Cache compatible, and the original override behavior is restored.

Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Code <noreply@anthropic.com>

Author: fabiendem

packages/core/sentry.gradle.kts

@@ -107,8 +107,9 @@ val androidAssetsDir = File("$rootDir/app/src/main/assets")
 
 // Values captured at configuration time so task onlyIf specs and actions do not read
 // `project` state at execution time (required for Gradle Configuration Cache compatibility).
-val copyOptionsFileEnabled = System.getenv("SENTRY_COPY_OPTIONS_FILE") != "false"
-val sentryAutoUploadGeneralEnabled = System.getenv("SENTRY_DISABLE_AUTO_UPLOAD") != "true"
+// The overridable `shouldCopySentryOptionsFile()` closure is still consulted (not the env var
+// directly) so setups that reassign `project.ext.shouldCopySentryOptionsFile` keep working.
+val copyOptionsFileEnabled = shouldCopySentryOptionsFile()
 val rootDirFile = project.rootDir
 
 tasks.register("copySentryJsonConfiguration") {
@@ -503,6 +504,12 @@ fun processVariant(v: Any) {
     val vName = v.javaClass.getMethod("getName").invoke(v) as String
     if (vName.contains("debug", ignoreCase = true)) return
 
+    // Captured here (inside the onVariants callback, which runs after the app build.gradle has
+    // evaluated) rather than at apply-time, so a `project.ext.shouldSentryAutoUploadGeneral`
+    // override set right after `apply from` (e.g. the Expo `disableAutoUpload` plugin) is honored.
+    // Referencing this captured boolean in `onlyIf` keeps the task Configuration Cache compatible.
+    val sentryAutoUploadGeneralEnabled = shouldSentryAutoUploadGeneral()
+
     val variantCapitalized = Character.toUpperCase(vName[0]).toString() + vName.substring(1)
     val sentryBundleTaskName =
         listOf(