chore: Release 1.0.4

[onesignal-deploy]

Channels: Current

🐛 Bug Fixes

• fix: display foreground notifications by default (fix: display foreground notifications by default #21)
• fix: [SDK-4511] fix Android build with Kotlin stdlib 2.2.x (fix: [SDK-4511] fix Android build with Kotlin stdlib 2.2.x #20)

[claude]

LGTM - mechanical release bump (version + sdkVersion strings) with regenerated docgen output.

Extended reasoning...

Overview

This PR releases v1.0.4. Changes are limited to: package.json version bump (1.0.3 → 1.0.4), sdkVersion string constants in the Android Kotlin plugin and iOS Swift plugin ("010003" → "010004"), and regenerated docgen output in README.md (formatting/whitespace differences only — no API surface changes). The actual bug fixes referenced in the description (#20, #21) were merged in earlier PRs.

Security risks

None. No changes to auth, crypto, permissions, input validation, or any logic paths. The sdkVersion string is a telemetry tag forwarded to OneSignalWrapper.

Level of scrutiny

Minimal scrutiny appropriate. This is a textbook release commit: three version-string updates and a docgen regeneration. The pattern matches the prior 1.0.3 release commit (4a1def4).

Other factors

No bugs were flagged by the bug hunting system. The README diff is large in line count but is entirely auto-generated formatting drift from @capacitor/docgen (e.g., --- → --------------------, bullet style - → *, extra blank lines between sections). The two SDK version constants are kept in sync between Android and iOS, as expected.