style: Fix spacing in script.h for OP_TRUE definition #32077

This pull request fixes a spacing issue in script.h where the definition for OP_TRUE was formatted without a space before the assignment operator. The only modification is changing:

-    OP_TRUE=OP_1,
+    OP_TRUE = OP_1,

This update improves the code's readability and adheres to the project's style guidelines without affecting functionality.

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Code Coverage & Benchmarks

For details see: https://corecheck.dev/bitcoin/bitcoin/pulls/32077.

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