test: Fix flaky ANR test by increasing blocking duration (#20239)

Closes #20215
Closes
[JS-2120](https://linear.app/getsentry/issue/JS-2120/flaky-ci-node-24-node-core-integration-tests)

Increase `longWork` iterations from 20 to 50 to ensure the blocking
function is more likely to be captured in ANR stack sampling, reducing
flakiness from sampling during timer processing.

A rerun solved it, but this would hopefully make it less flaky.

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

Author: JPeer264

dev-packages/node-core-integration-tests/suites/anr/app-path.mjs

@@ -25,7 +25,7 @@ Sentry.setUser({ email: 'person@home.com' });
 Sentry.addBreadcrumb({ message: 'important message!' });
 
 function longWork() {
-  for (let i = 0; i < 20; i++) {
+  for (let i = 0; i < 50; i++) {
     const salt = crypto.randomBytes(128).toString('base64');
     const hash = crypto.pbkdf2Sync('myPassword', salt, 10000, 512, 'sha512');
     assert.ok(hash);

dev-packages/node-core-integration-tests/suites/anr/basic-multiple.mjs

@@ -21,7 +21,7 @@ Sentry.setUser({ email: 'person@home.com' });
 Sentry.addBreadcrumb({ message: 'important message!' });
 
 function longWork() {
-  for (let i = 0; i < 20; i++) {
+  for (let i = 0; i < 50; i++) {
     const salt = crypto.randomBytes(128).toString('base64');
     const hash = crypto.pbkdf2Sync('myPassword', salt, 10000, 512, 'sha512');
     assert.ok(hash);

dev-packages/node-core-integration-tests/suites/anr/basic-session.js

@@ -20,7 +20,7 @@ Sentry.setUser({ email: 'person@home.com' });
 Sentry.addBreadcrumb({ message: 'important message!' });
 
 function longWork() {
-  for (let i = 0; i < 20; i++) {
+  for (let i = 0; i < 50; i++) {
     const salt = crypto.randomBytes(128).toString('base64');
     const hash = crypto.pbkdf2Sync('myPassword', salt, 10000, 512, 'sha512');
     assert.ok(hash);

dev-packages/node-core-integration-tests/suites/anr/basic.js

@@ -22,7 +22,7 @@ Sentry.setUser({ email: 'person@home.com' });
 Sentry.addBreadcrumb({ message: 'important message!' });
 
 function longWork() {
-  for (let i = 0; i < 20; i++) {
+  for (let i = 0; i < 50; i++) {
     const salt = crypto.randomBytes(128).toString('base64');
     const hash = crypto.pbkdf2Sync('myPassword', salt, 10000, 512, 'sha512');
     assert.ok(hash);

dev-packages/node-core-integration-tests/suites/anr/basic.mjs

@@ -21,7 +21,7 @@ Sentry.setUser({ email: 'person@home.com' });
 Sentry.addBreadcrumb({ message: 'important message!' });
 
 function longWork() {
-  for (let i = 0; i < 20; i++) {
+  for (let i = 0; i < 50; i++) {
     const salt = crypto.randomBytes(128).toString('base64');
     const hash = crypto.pbkdf2Sync('myPassword', salt, 10000, 512, 'sha512');
     assert.ok(hash);

dev-packages/node-core-integration-tests/suites/anr/forked.js

@@ -21,7 +21,7 @@ Sentry.setUser({ email: 'person@home.com' });
 Sentry.addBreadcrumb({ message: 'important message!' });
 
 function longWork() {
-  for (let i = 0; i < 20; i++) {
+  for (let i = 0; i < 50; i++) {
     const salt = crypto.randomBytes(128).toString('base64');
     const hash = crypto.pbkdf2Sync('myPassword', salt, 10000, 512, 'sha512');
     assert.ok(hash);

dev-packages/node-core-integration-tests/suites/anr/isolated.mjs

@@ -18,7 +18,7 @@ setupOtel(client);
 async function longWork() {
   await new Promise(resolve => setTimeout(resolve, 1000));
 
-  for (let i = 0; i < 20; i++) {
+  for (let i = 0; i < 50; i++) {
     const salt = crypto.randomBytes(128).toString('base64');
     const hash = crypto.pbkdf2Sync('myPassword', salt, 10000, 512, 'sha512');
     assert.ok(hash);

dev-packages/node-core-integration-tests/suites/anr/stop-and-start.js

@@ -23,15 +23,15 @@ Sentry.setUser({ email: 'person@home.com' });
 Sentry.addBreadcrumb({ message: 'important message!' });
 
 function longWorkIgnored() {
-  for (let i = 0; i < 20; i++) {
+  for (let i = 0; i < 50; i++) {
     const salt = crypto.randomBytes(128).toString('base64');
     const hash = crypto.pbkdf2Sync('myPassword', salt, 10000, 512, 'sha512');
     assert.ok(hash);
   }
 }
 
 function longWork() {
-  for (let i = 0; i < 20; i++) {
+  for (let i = 0; i < 50; i++) {
     const salt = crypto.randomBytes(128).toString('base64');
     const hash = crypto.pbkdf2Sync('myPassword', salt, 10000, 512, 'sha512');
     assert.ok(hash);