fix(gestures): Use peekDecorView to not force view hierarchy construction

[romtsn]

SentryGestureListener was calling window.getDecorView() which forces the creation of the entire view hierarchy if it hasn't been created yet. This can cause ANRs on the main thread, as seen in production with ~21k occurrences affecting ~195 users.

The ANR originates from SentryGestureListener.onScroll → getDecorView() triggering expensive view hierarchy construction during touch event processing.

Switches to window.peekDecorView() which returns null if the decor view hasn't been created yet, instead of forcing its creation. The existing null-check already handles this case gracefully by logging and returning early.

Fixes https://sentry.sentry.io/issues/6138840301/

[github-actions]

Semver Impact of This PR

🟢 Patch (bug fixes)

📋 Changelog Preview

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New Features ✨

• (otel) Create sentry-opentelemetry-otlp module for combining OpenTelemetry SDK OTLP export with Sentry SDK by adinauer in #5100
• (screenshot) Add screenshot masking using view hierarchy by romtsn in #5077

Bug Fixes 🐛

• (android) Remove AndroidRuntimeManager to prevent ANRs during SDK init by romtsn in #5127

• (gestures) Use peekDecorView to not force view hierarchy construction by romtsn in #5134

• (init) Reduce allocations and bytecode instructions during Sentry.init by romtsn in #5135
• (transport) Handle HTTP 413 with actionable log and use send_error for HTTP errors by adinauer in #5115
• Trim DSN string before URI parsing by adinauer in #5113
• Safe unregister SystemEventsBroadcastReceiver by kollesnica1337 in #5106

Internal Changes 🔧

Deps

• Bump getsentry/craft from 2.21.7 to 2.23.1 by dependabot in #5129
• Update Native SDK to v0.13.1 by github-actions in #5104
• Bump actions/upload-artifact from 6 to 7 by dependabot in #5130
• Bump actions/download-artifact from 7 to 8 by dependabot in #5132
• Bump gradle/actions from 5.0.1 to 5.0.2 by dependabot in #5131
• Bump github/codeql-action from 4.32.2 to 4.32.4 by dependabot in #5109
• Bump getsentry/craft from 2.21.2 to 2.21.7 by dependabot in #5110

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_{🤖 This preview updates automatically when you update the PR.}

[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	318.14 ms	377.45 ms	59.31 ms
Size	1.58 MiB	2.29 MiB	722.91 KiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
91bb874	310.68 ms	359.24 ms	48.56 ms
e59e22a	368.02 ms	432.00 ms	63.98 ms
fc5ccaf	279.11 ms	353.34 ms	74.23 ms
d15471f	315.20 ms	370.22 ms	55.02 ms
d15471f	286.65 ms	314.68 ms	28.03 ms
d15471f	342.08 ms	415.44 ms	73.35 ms
ad8da22	314.38 ms	352.29 ms	37.91 ms
cf708bd	434.73 ms	502.96 ms	68.22 ms
abfcc92	309.54 ms	380.32 ms	70.78 ms
91bb874	314.47 ms	440.00 ms	125.53 ms

App size

Revision	Plain	With Sentry	Diff
91bb874	1.58 MiB	2.13 MiB	559.07 KiB
e59e22a	1.58 MiB	2.20 MiB	635.34 KiB
fc5ccaf	1.58 MiB	2.13 MiB	557.54 KiB
d15471f	1.58 MiB	2.13 MiB	559.54 KiB
d15471f	1.58 MiB	2.13 MiB	559.54 KiB
d15471f	1.58 MiB	2.13 MiB	559.54 KiB
ad8da22	1.58 MiB	2.29 MiB	719.83 KiB
cf708bd	1.58 MiB	2.11 MiB	539.71 KiB
abfcc92	1.58 MiB	2.13 MiB	557.31 KiB
91bb874	1.58 MiB	2.13 MiB	559.07 KiB

Previous results on branch: rz/fix/gesture-listener-anr

Startup times

Revision	Plain	With Sentry	Diff
ae1cec9	311.94 ms	356.06 ms	44.12 ms

App size

Revision	Plain	With Sentry	Diff
ae1cec9	1.58 MiB	2.29 MiB	723.15 KiB

[adinauer]

LGTM