fix: hanging process functionality killing wrong processes (#2419)

When using backend data directories like `Quietdev`, `Quietdev1`, `Quietdev2',
restarting the process using `Quietdev` can result in that process killing the
other backend processes due to the grep command used for finding hanging
processes. Example:

```
user (Quietdev1):
desktop:main:main Forked backend, PID: 214543

owner (Quietdev):
Found 1 hanging backend process(es) with pid(s) 214543. Killing...
```

packages/common/src/process.ts

@@ -1,19 +1,19 @@
 import { type SupportedPlatform } from '@quiet/types'
 
+/**
+ *  Commands should output hanging backend pid
+ */
 export const hangingBackendProcessCommand = ({
   backendBundlePath,
   dataDir,
 }: {
   backendBundlePath: string
   dataDir: string
 }): string => {
-  /**
-   *  Commands should output hanging backend pid
-   */
   const byPlatform = {
-    android: `pgrep -af "${backendBundlePath}" | grep -v pgrep | grep "${dataDir}" | awk '{print $1}'`,
-    linux: `pgrep -af "${backendBundlePath}" | grep -v egrep | grep "${dataDir}" | awk '{print $1}'`,
-    darwin: `ps -A | grep "${backendBundlePath}" | grep -v egrep | grep "${dataDir}" | awk '{print $1}'`,
+    android: `pgrep -af "${backendBundlePath}" | grep -v pgrep | grep -e "${dataDir}$" -e "${dataDir}[[:space:]]" | awk '{print $1}'`,
+    linux: `pgrep -af "${backendBundlePath}" | grep -v egrep | grep -e "${dataDir}$" -e "${dataDir}[[:space:]]" | awk '{print $1}'`,
+    darwin: `ps -A | grep "${backendBundlePath}" | grep -v egrep | grep -e "${dataDir}$" -e "${dataDir}[[:space:]]" | awk '{print $1}'`,
     win32: `powershell "Get-WmiObject Win32_process -Filter {commandline LIKE '%${backendBundlePath.replace(
       /\\/g,
       '\\\\'