feat: TextEncoder.prototype.encodeInto polyfill #1366

Job	Run time
Lint	26s
Test on Node.js 22.20	1m 33s
Test on Node.js 24.10	1m 27s
Windows with Node.js 22.20	1m 20s
Windows with Node.js 24.0.0	1m 28s
Windows with Node.js 20.18.0	1m 26s
Windows with Node.js 24.10	1m 17s
Windows with Node.js 22.6.0	1m 32s
Test on firefox:puppeteer	58s
Windows with Node.js 20.19	4m 25s
Test on chromium:playwright	57s
Test on Node.js 24.0.0	1m 31s
Test on Node.js 20.18.0	1m 34s
Jest on Node.js	21s
Test on Node.js 22.6.0	1m 29s
Test on Node.js 20.19	1m 38s
Test on chrome:puppeteer	55s
Test on javascriptcore (from jsvu)	27s
Test on Deno v1.x	35s
Test on javascriptcore (from esvu)	27s
Test on spidermonkey (from jsvu)	25s
Test on hermes (from jsvu)	49s
Test on quickjs (from jsvu)	31s
Test on Bun	37s
Test on firefox:playwright	1m 6s
Test on v8 (from jsvu)	30s
Test on webkit:playwright	1m 29s
Test on engine262 (from esvu)	2m 37s
Test on xs (from jsvu)	31s
Test on Deno v2.x	42s
Test on Electron	41s
Test on spidermonkey (from esvu)	36s
Test on v8 (from esvu)	31s
Test on xs (from esvu)	28s
Test on Electron as Node.js	52s
	38m 11s

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