Switch && for || to fix bug in #23889 resolution

[lostluck]

Switch && for || to fix bug in #23889 resolution.

Specifically, that check is looking for coder overrides, and we only need an override for one of the value or pointer, and not both. && just causes more schemafication than required, leading to pipeline initialization failures.

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[codecov]

Codecov Report

Merging #24017 (d6a86e8) into master (380d473) will not change coverage.
The diff coverage is 0.00%.

@@           Coverage Diff           @@
##           master   #24017   +/-   ##
=======================================
  Coverage   73.40%   73.40%           
=======================================
  Files         710      710           
  Lines       96122    96122           
=======================================
  Hits        70556    70556           
  Misses      24250    24250           
  Partials     1316     1316           

Flag	Coverage Δ
go	50.99% <0.00%> (ø)

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Impacted Files	Coverage Δ
...s/go/pkg/beam/core/runtime/graphx/schema/schema.go	65.94% <0.00%> (ø)

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[lostluck]

R: @ryanthompson591

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