[receiver/mongodb] fix missing version (#23860)

**Description:**
Fix missing version in mongodb creating panics during scrapes

**Link to tracking Issue:**
Fixes #23859

**Testing:**
No tests, really.

**Documentation:**
N/A

Author: atoulme

.chloggen/fix-mongodb-version-missing.yaml

@@ -0,0 +1,20 @@
+# Use this changelog template to create an entry for release notes.
+# If your change doesn't affect end users, such as a test fix or a tooling change,
+# you should instead start your pull request title with [chore] or use the "Skip Changelog" label.
+
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: bug_fix
+
+# The name of the component, or a single word describing the area of concern, (e.g. filelogreceiver)
+component: mongodbreceiver
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Fix missing version in mongodb creating panics during scrapes
+
+# Mandatory: One or more tracking issues related to the change. You can use the PR number here if no issue exists.
+issues: [23859]
+
+# (Optional) One or more lines of additional information to render under the primary note.
+# These lines will be padded with 2 spaces and then inserted directly into the document.
+# Use pipe (|) for multiline entries.
+subtext:

receiver/mongodbreceiver/scraper.go

@@ -30,10 +30,12 @@ type mongodbScraper struct {
 }
 
 func newMongodbScraper(settings receiver.CreateSettings, config *Config) *mongodbScraper {
+	v, _ := version.NewVersion("0.0")
 	return &mongodbScraper{
-		logger: settings.Logger,
-		config: config,
-		mb:     metadata.NewMetricsBuilder(config.MetricsBuilderConfig, settings),
+		logger:       settings.Logger,
+		config:       config,
+		mb:           metadata.NewMetricsBuilder(config.MetricsBuilderConfig, settings),
+		mongoVersion: v,
 	}
 }