Suppress StackParser to extract source code from files during tests

[Reversean]

Catcher read backtrace from file file via StackParser.

In most test-cases we don't have this file, still StackParser tries to find it, fails and output spam logs:

[@hawk.so/javascript]: Hawk JS SDK: Can not extract source code. Please, report this issue: https://github.com/codex-team/hawk.javascript/issues/new TypeError: fetch failed
[@hawk.so/javascript]:     at node:internal/deps/undici/undici:15845:13
[@hawk.so/javascript]:     at window.fetch (/home/reversean/Dev/codex/hawk.javascript/packages/javascript/src/addons/breadcrumbs.ts:398:20) {
[@hawk.so/javascript]:   [cause]: Error: not implemented... yet...
[@hawk.so/javascript]:       at makeNetworkError (node:internal/deps/undici/undici:10147:35)
[@hawk.so/javascript]:       at schemeFetch (node:internal/deps/undici/undici:11685:34)
[@hawk.so/javascript]:       at mainFetch (node:internal/deps/undici/undici:11533:30)
[@hawk.so/javascript]:       at fetching (node:internal/deps/undici/undici:11502:7)
[@hawk.so/javascript]:       at fetch (node:internal/deps/undici/undici:11368:20)
[@hawk.so/javascript]:       at fetch (node:internal/deps/undici/undici:15843:10)
[@hawk.so/javascript]:       at fetch (node:internal/bootstrap/web/exposed-window-or-worker:83:12)
[@hawk.so/javascript]:       at window.fetch (/home/reversean/Dev/codex/hawk.javascript/packages/javascript/src/addons/breadcrumbs.ts:398:26)
[@hawk.so/javascript]:       at fetchTimer (/home/reversean/Dev/codex/hawk.javascript/packages/core/src/modules/fetch-timer.ts:19:24)
[@hawk.so/javascript]:       at StackParser.loadSourceFile (/home/reversean/Dev/codex/hawk.javascript/packages/core/src/modules/stack-parser.ts:133:41)
[@hawk.so/javascript]: }

Suggested changes mocks StackParser.parse in catcher tests which prevents trash unwanted logs.

[neSpecc]

Debug if extractSourceCode is still working.