Enable spoof_build_vars on initial install to pass by default

[osm0sis]

• most devices seem to require spoof_build_vars so enable it by default, but only on new installs, so that they pass MEETS_DEVICE_INTEGRITY out of the box
• this still allows it to be disabled by simply deleting the file after initial install for those who want to avoid Zygisk usage and/or can pass with their own device values
• some fingerprints which pass STRONG with hardware keybox do not seem to also pass DEVICE with the AOSP software keybox, but many do both, so switch to one
• update example fingerprint to be a helpful hint for users looking for ones that work going forward

[osm0sis]

Hold on, going to find a different print for the default. (Beta prints expire roughly 6 weeks after the beta's release date).

Might be good to have that in the README example though so people have a clue where to readily find a working one.

[osm0sis]

Alright, ready to go. 👍

[osm0sis]

Amazing, thanks! Excited for the next release! 🙌🤘

[Myer921]

The OnePlus series does not need to be enabled; the OnePlus 9 and below require TEE simulation, while the OnePlus 10 and above do not need spoof_build_vars. The Pixel series requires the use of spoof_build_vars. In testing with the Pixel 4, using its own information can pass STRONG, but it fails immediately after installing LSPosed. Using spoof_build_vars resolves this issue.

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Oneplus 系列不需要启用，Oneplus 9 以及以下则需要 TEE 模拟，Oneplus 10 以上不需要 spoof_build_vars 。
Pixel 系列需要使用 spoof_build_vars ，Pixel4 的测试中使用自身信息可以通过 STRONG ，但安装 LSPosed 后立即失败，使用 spoof_build_vars 后可以解决这个问题。