/etc/influxdb/config.yml does not work but config.toml works. influxdb v2

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I tried setting configuration with `/etc/influxdb/config.yml` and `/etc/influxdb/config.toml` while starting the systemd influxd.service. But only the configuration in `config.toml` seems to be read, since only this changes the port influxd is listening on in my setup.

__Steps to reproduce:__
List the minimal actions needed to reproduce the behaviour.

1. Install influxdb2 from `https://repos.influxdata.com/debian` on Ubuntu 24.04
2. Create configuration file `/etc/influxdb/config.yml`
3. `systemctl restart influxd`

```
#config.yml
http-bind-address: "localhost:8088"
```

__Expected behaviour:__
Influxd listens on localhost:8088

__Actual behaviour:__
Influxd listens on 0.0.0.0/8086 (default configuration)

__Environment info:__

* System info: Run `uname -srm` or similar and copy the output here (we want to know your OS, architecture etc).
```
Linux 6.8.0-51-generic x86_64
```
OS: Ubuntu 24.04
Influxdb: v2.7.11

__More details:__

```
#config.toml that works
http-bind-address = "localhost:8088"
```

The following permissions are set (Only either `config.toml` and `config.yml` are present throughout my tests):
```
ls -la /etc/influxdb/
total 8
drwxr-xr-x 1 root root 38 Jan 10 11:43 .
drwxr-xr-x 1 root root 4110 Jan 9 15:23 ..
-rwxr--r-- 1 root root 36 Jan 10 11:43 config.yml
-rwxr--r-- 1 root root 37 Jan 10 11:25 config.toml
```

I also tried to help influxd by setting the following configurations within the service:
```
WorkingDirectory=/etc/influxdb
Environment="INFLUXD_CONFIG_PATH=/etc/influxdb"
```

systemd service file:
```# If you modify this, please also make sure to edit init.sh

[Unit]
Description=InfluxDB is an open-source, distributed, time series database
Documentation=https://docs.influxdata.com/influxdb/
After=network-online.target

[Service]
User=influxdb
Group=influxdb
LimitNOFILE=65536
EnvironmentFile=-/etc/default/influxdb2
ExecStart=/usr/lib/influxdb/scripts/influxd-systemd-start.sh
KillMode=control-group
Restart=on-failure
Type=forking
PIDFile=/var/lib/influxdb/influxd.pid
StateDirectory=influxdb
StateDirectoryMode=0750
LogsDirectory=influxdb
LogsDirectoryMode=0750
UMask=0027
TimeoutStartSec=0

[Install]
WantedBy=multi-user.target
Alias=influxd.service
```

##### Relevant URLs
- https://docs.influxdata.com/influxdb/v2/reference/config-options/#influxdb-configuration-file
- https://docs.influxdata.com/influxdb/v2/reference/config-options/#http-bind-address

Start with the documented configuration-file options and the systemd unit's ExecStart entry, /usr/lib/influxdb/scripts/influxd-systemd-start.sh, then compare how config.yml and config.toml are discovered under /etc/influxdb. Done means config.yml is either honored when influxd.service starts, making the daemon listen on localhost:8088, or the supported behavior is clearly documented.

Written by the indexing model from the issue text.