Fix recorder: stop mutating shared defaultRetryOptions

[gololdf1sh]

Problem

In lib/recorder.js:220:

return promiseRetry(Object.assign(defaultRetryOptions, retryOpts), (retry, number) => { ... })

Object.assign(target, source) mutates target and returns the same reference. By passing the module-level defaultRetryOptions as the target, every custom option (minTimeout, factor, maxTimeout, retries) gets merged into the shared defaults and persists for the lifetime of the process.

Subsequent recorder.retry() calls inherit those leaked values, even when they explicitly omit them.

Reproduction

// Scenario 1: explicit custom backoff
Scenario('s1', ({ I }) => {
  I.retry({ retries: 3, minTimeout: 1000, factor: 1.5 }).seeElement('[data-test-id="non-existent"]');
});

// Scenario 2: expects default minTimeout (~150ms)
Scenario('s2', ({ I }) => {
  I.retry(3).seeElement('[data-test-id="non-existent"]');
});

Instrumentation around the Object.assign call:

Scenario 1:
BEFORE: defaultRetryOptions={"retries":0,"minTimeout":150,"maxTimeout":10000}
AFTER:  defaultRetryOptions={"retries":3,"minTimeout":1000,"factor":1.5,...}  sameRef=true

Scenario 2:
BEFORE: defaultRetryOptions={"retries":2,"minTimeout":1000,...}  ← leaked from S1

Scenario 2 fails in ~5s instead of the expected ~700ms because it inherits minTimeout=1000 from the previous scenario.

Fix

Pass a fresh {} as the first arg so a new merged object is produced each call without touching the shared defaults:

-return promiseRetry(Object.assign(defaultRetryOptions, retryOpts), (retry, number) => {
+return promiseRetry(Object.assign({}, defaultRetryOptions, retryOpts), (retry, number) => {

Repro project

gololdf1sh/codeceptjs-retry-test.