fix!: remove --java_runtime_version match on version only

Custom Java runtimes (those neither defined by the user nor rules_java)
should not match on `--java_runtime_version` set to a version without a
prefix as that can result in unexpected Java toolchain resolution
results.

By making this change now, we can consider registering both Java and GVM
toolchains automatically with Bzlmod in follow-up changes.

Signed-off-by: Fabian Meumertzheim <fabian@meumertzhe.im>

internal/graalvm_bindist.bzl

@@ -744,7 +744,7 @@ toolchain(
  # different architectures. As every Java compilation toolchain depends on a bootstrap runtime in
  # the same configuration, this constraint will not result in toolchain resolution failures.
  exec_compatible_with = {target_compatible_with},
- target_settings = [":version_or_prefix_version_setting"],
+ target_settings = [":prefix_version_setting"],
  toolchain_type = "@bazel_tools//tools/jdk:bootstrap_runtime_toolchain_type",
  toolchain = "{toolchain}",
  visibility = ["//visibility:public"],
@@ -787,23 +787,10 @@ config_setting(
  values = {{"java_runtime_version": "{prefix}_{version}"}},
  visibility = ["//visibility:private"],
 )
-config_setting(
- name = "version_setting",
- values = {{"java_runtime_version": "{version}"}},
- visibility = ["//visibility:private"],
-)
-alias(
- name = "version_or_prefix_version_setting",
- actual = select({{
- ":version_setting": ":version_setting",
- "//conditions:default": ":prefix_version_setting",
- }}),
- visibility = ["//visibility:private"],
-)
 toolchain(
  name = "toolchain",
  target_compatible_with = {target_compatible_with},
- target_settings = [":version_or_prefix_version_setting"],
+ target_settings = [":prefix_version_setting"],
  toolchain_type = "@bazel_tools//tools/jdk:runtime_toolchain_type",
  toolchain = "{toolchain}",
  visibility = ["//visibility:public"],