I think you need a unique servlet-context-name, it must mit be empty.

Thanks for the reply.
After providing unique servlet-context-name still the issue persists.  I am attaching my module structure. My liferay-hook.xml looks like:
<?xml version="1.0"?>
<!DOCTYPE hook PUBLIC "-//Liferay//DTD Hook 7.2.0//EN" "http://www.liferay.com/dtd/liferay-hook_7_2_0.dtd"><hook>
    <servlet-filter>
        <servlet-filter-name>MyLoginFilter</servlet-filter-name>
        <servlet-filter-impl>com.liferay.filter.login.MyLoginFilter</servlet-filter-impl>
        
    </servlet-filter>
    <servlet-filter-mapping>
        <servlet-filter-name>MyLoginFilter</servlet-filter-name>
        
        <url-pattern>/c/portal/login</url-pattern>
       
    </servlet-filter-mapping>
</hook>
Being a naive to liferay I am not able to find the cause of trouble. Kindly look once and suggest some pointers on debugging.

@Olaf thanks for replying,I have made the changes as per your suggestion but still the issue persists.  My code looks like:@Component(
    immediate = true,
    property = {
            "before-filter=Auto Login Filter",
             "servlet-context-name=LoginFilter",
             "servlet-filter-name=MyLoginFilter",
             "url-pattern=/c/portal/login"
         //    "dispatcher=REQUEST"
    },
    service = Filter.class
)
public class MyLoginFilter implements Filter {
        @Reference
    private OpenIdConnectProviderRegistry<?,?> openIdConnectProviderRegistry;
    @Reference
    private OpenIdConnectServiceHandler _openIdConnectServiceHandler;
I have also removed liferay-hook.xml and have gone through the link provided by you. Kindly suggest any pointer to debug or any possible laggings.Thanks in Advance

Thanks for suggestions Chris! I changed to setter with logs but its not being called. No logs inside setters are printed. Module is also started. Gogo shell gives results like:
lb -s
1107|Active     |   10|com.liferay.filter.login (1.0.0)|1.0.0

Other logs I am attaching in file. Being new to liferay I am failing to debug deep frpm Gogo shell. Please check the logs once to see if everything is correct.

@Olaf The issue got resolved. I had issue related to multiple deployment. Your emphasis on this point helped. Thanks a lot!!