Remove ccon

[Changdw]

Re: #15676

Changelog

• Removed the ccon format and unified the use of the cconb format

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Continuous Integration

This pull request:

• needs automatic test cases check.

  Manual trigger with @cocos-robot run test cases afterward.

• does not change any runtime related code or build configuration

  If any reviewer thinks the CI checks are needed, please uncheck this option, then close and reopen the issue.

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Compatibility Check

This pull request:

• changes public API, and have ensured backward compatibility with deprecated features.
• affects platform compatibility, e.g. system version, browser version, platform sdk version, platform toolchain, language version, hardware compatibility etc.
• affects file structure of the build package or build configuration which requires user project upgrade.
• introduces breaking changes, please list all changes, affected features and the scope of violation.

[github-actions]

@Changdw, Please check the result of run test cases:

• Test Platform: PR-Test
• Editor Version: v3.8.7
• Task Result: FAIL
• Task URL: https://cctest.cocos.org/#/reportview/PR-TEST/116eb5bf-cd04-4613-a0a1-de30c839710e/-1
• GitHub Action: https://github.com/cocos/cocos-engine/actions/runs/14186164988

Task Details

Platform	build	boot	runned	crashScene	FailScene
web-mobile	FAIL		FAIL
ios	FAIL		FAIL
mac	FAIL		FAIL

[github-actions]

@Changdw, Please check the result of run test cases:

• Test Platform: PR-Test
• Editor Version: v3.8.7
• Task Result: FAIL
• Task URL: https://cctest.cocos.org/#/reportview/PR-TEST/029dcac1-3eaf-4758-b789-b11cca579fd2/-1
• GitHub Action: https://github.com/cocos/cocos-engine/actions/runs/14186164988

Task Details

Platform	build	boot	runned	crashScene	FailScene
windows	FAIL		FAIL
android	FAIL		FAIL
wechatgame	FAIL		FAIL

[github-actions]

@Changdw, Please check the result of run test cases:

• Test Platform: PR-Test
• Editor Version: v3.8.7
• Task Result: FAIL
• Task URL: https://cctest.cocos.org/#/reportview/PR-TEST/5fe15d4f-5a67-44b7-9264-5126263be560/-1
• GitHub Action: https://github.com/cocos/cocos-engine/actions/runs/14323765905

Task Details

Platform	build	boot	runned	crashScene	FailScene
web-mobile	PASS	PASS	PASS
ios	FAIL		FAIL
mac	FAIL		FAIL

[github-actions]

@Changdw, Please check the result of run test cases:

• Test Platform: PR-Test
• Editor Version: v3.8.7
• Task Result: FAIL
• Task URL: https://cctest.cocos.org/#/reportview/PR-TEST/0cc2bb1a-c8e7-419c-b98f-d7015166c4ea/-1
• GitHub Action: https://github.com/cocos/cocos-engine/actions/runs/14323765905

Task Details

Platform	build	boot	runned	crashScene	FailScene
windows	FAIL		FAIL
android	FAIL		FAIL
wechatgame	FAIL		FAIL