ci: build_xcframeworkとbuild_java_packageもmainで動かす

[qryxip]

内容

#1229 ではbuild_xcframeworkとbuild_java_packageが対象外になってしまったので、この二つも動くようにする。
(#1229 (comment))

このPRでは問題箇所の修正のみに留める。

関連 Issue

その他

[Hiroshiba]

方針はLGTMで、あとは念の為にAIチェックしておくと良いかもくらいの気持ち！
（別にCopilot君信じてそのままマージでも良さそう）

[Copilot]

Pull request overview

This PR fixes a bug introduced in PR #1229 where the build_xcframework and build_java_package jobs were not running on the main branch. The fix adds the missing github.ref != 'refs/heads/main' condition to both jobs' if statements so they now correctly run on main branch, release events, and manual workflow_dispatch events (i.e., when IS_SIMPLE_TEST is false).

Key changes:

• Updated build_xcframework job condition to include main branch checks
• Updated build_java_package job condition to include main branch checks

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[qryxip]

https://github.com/VOICEVOX/voicevox_core/actions/runs/20047798262?pr=1230
foojayが一日中503 Service Temporarily Unavailableを返し続けている…。

voicevox_core/crates/voicevox_core_java_api/settings.gradle

Lines 16 to 19 in bda6cb6

	plugins {
	// Apply the foojay-resolver plugin to allow automatic download of JDKs
	id 'org.gradle.toolchains.foojay-resolver-convention' version '0.4.0'
	}