[chore][update-otel] Tidy after generating the code (open-telemetry#3…

…7440)

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Ex. Adding a feature - Explain what this achieves.-->
#### Description

Adds an extra `make gotidy` after `make generate` and `make crosslink`

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See open-telemetry#37437 for example where it failed because of this.

Makefile

@@ -423,6 +423,8 @@ update-otel:$(MULTIMOD)
 	$(MAKE) genoteltestbedcol
 	$(MAKE) generate
 	$(MAKE) crosslink
+	# Tidy again after generating code
+	$(MAKE) gotidy
 	$(MAKE) remove-toolchain
 	git add . && git commit -s -m "[chore] mod and toolchain tidy" ; \