fix(windows): Make sure to log the final error message

[srebhan]

Summary

When exiting a program with log.Fatal, the program does not execute any deferred calls and will also exit immediately. For logging with the Windows event-logger interface, this means that the connection to the logger is not shut down gracefully and thus the final (and most important) log message is lost.

This PR does not use log.Fatal to log the message but rather rely on log.Print which allows for a graceful exit. Furthermore, we move the logging into the runApp function which really is the core processing loop.

Checklist

• No AI generated code was used in this PR

Related issues

resolves #14144

[telegraf-tiger]

Download PR build artifacts for linux_amd64.tar.gz, darwin_arm64.tar.gz, and windows_amd64.zip.
Downloads for additional architectures and packages are available below.

👍 This pull request doesn't change the Telegraf binary size

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Artifact URLs

DEB	RPM	TAR GZ	ZIP
amd64.deb	aarch64.rpm	darwin_amd64.tar.gz	windows_amd64.zip
arm64.deb	armel.rpm	darwin_arm64.tar.gz	windows_arm64.zip
armel.deb	armv6hl.rpm	freebsd_amd64.tar.gz	windows_i386.zip
armhf.deb	i386.rpm	freebsd_armv7.tar.gz
i386.deb	ppc64le.rpm	freebsd_i386.tar.gz
mips.deb	riscv64.rpm	linux_amd64.tar.gz
mipsel.deb	s390x.rpm	linux_arm64.tar.gz
ppc64el.deb	x86_64.rpm	linux_armel.tar.gz
riscv64.deb		linux_armhf.tar.gz
s390x.deb		linux_i386.tar.gz
		linux_mips.tar.gz
		linux_mipsel.tar.gz
		linux_ppc64le.tar.gz
		linux_riscv64.tar.gz
		linux_s390x.tar.gz

[DStrand1]

Nice find!

[powersj]

Thank you very much for tracking this down.