chore: removed sentry form server (#40990)

## Description
> [!TIP]  
> _Add a TL;DR when the description is longer than 500 words or
extremely technical (helps the content, marketing, and DevRel team)._
>
> _Please also include relevant motivation and context. List any
dependencies that are required for this change. Add links to Notion,
Figma or any other documents that might be relevant to the PR._


Fixes #`Issue Number`  
_or_  
Fixes `Issue URL`
> [!WARNING]  
> _If no issue exists, please create an issue first, and check with the
maintainers if the issue is valid._

## Automation

/ok-to-test tags="@tag.All"

### 🔍 Cypress test results
<!-- This is an auto-generated comment: Cypress test results  -->
> [!TIP]
> 🟢 🟢 🟢 All cypress tests have passed! 🎉 🎉 🎉
> Workflow run:
<https://github.com/appsmithorg/appsmith/actions/runs/15815846167>
> Commit: 366aaa8
> <a
href="https://internal.appsmith.com/app/cypress-dashboard/rundetails-65890b3c81d7400d08fa9ee5?branch=master&workflowId=15815846167&attempt=1"
target="_blank">Cypress dashboard</a>.
> Tags: `@tag.All`
> Spec:
> <hr>Mon, 23 Jun 2025 06:27:29 UTC
<!-- end of auto-generated comment: Cypress test results  -->


## Communication
Should the DevRel and Marketing teams inform users about this change?
- [ ] Yes
- [ ] No


<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

- **Refactor**
- Replaced Sentry-based error reporting with enhanced internal logging
for exceptions.
- Introduced a new logging utility to improve observability and error
context in logs.
- **Chores**
- Removed Sentry integration and related error reporting code from the
application.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

Author: ApekshaBhosale

app/server/appsmith-server/src/main/java/com/appsmith/server/configurations/InstanceConfig.java

@@ -5,7 +5,6 @@
 import com.appsmith.server.repositories.CacheableRepositoryHelper;
 import com.appsmith.server.services.ConfigService;
 import io.micrometer.observation.annotation.Observed;
-import io.sentry.Sentry;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.boot.context.event.ApplicationReadyEvent;
@@ -71,7 +70,6 @@ public void onApplicationEvent(ApplicationReadyEvent applicationReadyEvent) {
             startupProcess.block();
         } catch (Exception e) {
             log.debug("Application start up encountered an error: {}", e.getMessage());
-            Sentry.captureException(e);
         }
     }
 

app/server/appsmith-server/src/main/java/com/appsmith/server/exceptions/GlobalExceptionHandler.java

@@ -35,7 +35,7 @@
 import java.util.HashMap;
 import java.util.Map;
 
-import static com.appsmith.server.exceptions.util.SentryLogger.doLog;
+import static com.appsmith.server.exceptions.util.ObservabilityLogger.doLog;
 
 /**
  * This class catches all the Exceptions and formats them into a proper ResponseDTO<ErrorDTO> object before

app/server/appsmith-server/src/main/java/com/appsmith/server/exceptions/util/ObservabilityLogger.java

@@ -0,0 +1,39 @@
+package com.appsmith.server.exceptions.util;
+
+import com.appsmith.external.exceptions.AppsmithErrorAction;
+import com.appsmith.external.exceptions.BaseException;
+import lombok.extern.slf4j.Slf4j;
+
+import java.io.PrintWriter;
+import java.io.StringWriter;
+
+@Slf4j
+public class ObservabilityLogger {
+    public static void doLog(Throwable error) {
+        if (error instanceof BaseException baseException && baseException.isHideStackTraceInLogs()) {
+            log.error(baseException.getClass().getSimpleName() + ": " + baseException.getMessage());
+        } else {
+            log.error("", error);
+        }
+
+        StringWriter stringWriter = new StringWriter();
+        PrintWriter printWriter = new PrintWriter(stringWriter);
+        error.printStackTrace(printWriter);
+        String stringStackTrace = stringWriter.toString();
+
+        // Log stack trace for debugging
+        log.error("Stack Trace: {}", stringStackTrace);
+
+        if (error instanceof BaseException) {
+            BaseException baseError = (BaseException) error;
+            if (baseError.getErrorAction() == AppsmithErrorAction.LOG_EXTERNALLY) {
+                // Log additional context for external logging
+                log.error(
+                        "Downstream Error - Message: {}, Code: {}",
+                        baseError.getDownstreamErrorMessage(),
+                        baseError.getDownstreamErrorCode());
+                baseError.getContextMap().forEach((key, value) -> log.error("Context - {}: {}", key, value));
+            }
+        }
+    }
+}