[4.0] Namespace classes

[hardik-codes]

Summary of Changes

Used namespace classes in

• installation/template/message.php

Testing Instructions

Code Inspection

[Quy]

I have tested this item ✅ successfully on 7aad637

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[mbabker]

Remove non-install changes or close per #24188

[hardik-codes]

Remove non-install changes or close per #24188

@mbabker Could you please elaborate which 'non-install changes' you are referring to ? I'll fix them asap.

[SharkyKZ]

Those in com_privacy and com_userlogs. They should be left alone for now as per request in #24188.

[hardik-codes]

@SharkyKZ @mbabker now have a look.

[chmst]

I have tested this item ✅ successfully on 73bde52

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[ghost]

@Quy please retest.

[wilsonge]

Thanks!