Remove SVDecomp and SVBackSubst from TypeScript definitions

[Copilot]

TypeScript definitions declared SVDecomp and SVBackSubst functions that don't exist in the compiled opencv.js binary, causing runtime errors after successful compilation.

Changes

• Removed incorrect type definitions from src/types/opencv/core_array.ts:

  • SVDecomp() function declaration
  • SVBackSubst() function declaration

• Added test coverage in test/linearAlgebra.test.ts:

  • Verifies these functions are undefined at runtime
  • Documents available alternatives (solve, invert, eigen)
  • Confirms DECOMP constants exist (DECOMP_SVD = 1, etc.)

Impact

Users now get TypeScript compilation errors instead of runtime errors. The DECOMP_SVD constant remains available for use with alternative functions:

// Before: compiled but failed at runtime
cv.SVDecomp(src, w, u, vt);  // Runtime: "SVDecomp is not defined"

// After: TypeScript error at compile time
cv.SVDecomp(src, w, u, vt);  // TS2339: Property 'SVDecomp' does not exist

// Available alternatives:
cv.solve(A, b, x, cv.DECOMP_SVD);    // Solve with SVD decomposition
cv.invert(A, Ainv, cv.DECOMP_SVD);   // Invert with SVD decomposition
cv.eigen(src, eigenvalues, eigenvectors);  // Eigenvalue decomposition

Root Cause

These functions are not whitelisted in OpenCV's JavaScript build configuration (platforms/js/opencv_js.config.py), so they're never compiled into the WASM binary despite being valid C++ API functions.

Original prompt

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This section details on the original issue you should resolve

<issue_title>SVDecomp is not defined</issue_title>
<issue_description>So try to use SVDecomp method from opencv in my project, but turns out it doesnt contain the SVDecomp function. I use it in this project min-ar-ts</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes SVDecomp is not defined #14

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