amp-bind: Support multiple args in Array.reduce()

[dreamofabear]

Fixes #12349.

/to @alabiaga

[codecov-io]

Codecov Report

Merging #16960 into master will decrease coverage by 0.18%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master   #16960      +/-   ##
==========================================
- Coverage    78.1%   77.92%   -0.19%     
==========================================
  Files         561      561              
  Lines       40754    41631     +877     
==========================================
+ Hits        31831    32439     +608     
- Misses       8923     9192     +269

Flag	Coverage Δ
#integration_tests	34.46% <11.11%> (-0.01%)	⬇️
#unit_tests	77% <100%> (-0.16%)	⬇️

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