Fix spelling errors in comments and identifiers

[NeuronPulse]

Description:

Fixes a batch of spelling errors found throughout the codebase. Changes are limited to comments, JSDoc, string literals, and a few misspelled internal identifiers — no runtime/serialization behavior is
affected.

Misspellings fixed in comments / JSDoc / string literals

• recieve → receive (and receieved/recieved → received)
• occured → occurred (and occurence → occurrence)
• wether → whether
• intial → initial
• compatiblity → compatibility
• conflcits → conflicts
• conneciton → connection
• corropoding → corresponding
• covnert → convert
• dependecies → dependencies
• negitive → negative
• neumeric → numeric
• interperated → interpreted
• amound → amount
• equivelant → equivalent
• scatch / scrath → scratch
• analagous, algoritm, calcuate, fluctations, funtions, genrates, inlcusive, keeing, labling, langauge / languge, lastest, lcoation, mananging, mulitple, multiplcation, objecct, placeholdes, positve,
  pritimive, recursivly, referenes, refrencing, represeting, resolove, resonse, retreive, reuslt, rperesenting, senosr, specificly, superceded, targetting, theads, transcirption, everying, normalzie,
  succesfully, accumalated, activaed

Misspelled internal identifiers renamed

• CONTORL_INCR_COUNTER → CONTROL_INCR_COUNTER
• list.instert → list.insert
• oldCompilerCompatiblity → oldCompilerCompatibility
• _convertPlaceholdes → _convertPlaceholders

Known issue left intentionally unchanged

• pen_setPenHueToNumber is not a typo and was left as-is. It is the SB2 legacy IR opcode: sb2_specmap.js maps SB2's setPenHueTo: to it, and it is consumed internally by irgen.js/jsgen.js/enums.js. Renaming
  it would break loading of Scratch 2.0 projects, so no change is made.

[CubesterYT]

Was this 100% generated with AI?

[NeuronPulse]

Good question. I did the identifier renames (like CONTORL to CONTROL) manually, those need context and can't be blindly replaced. For comments and docs, I used AI as a spell‑checker since English isn't my first language, but I reviewed every suggestion. So AI only helped with wording, not with code logic.

[GarboMuffin]

maybe it will be merged sometime within the next year but just keep in mind that this kind of pr is slop that is not important to us to get in on any reasonable timeline